static DEFINE_SPINLOCK(libcfs_nidstring_lock);
+static struct netstrfns *libcfs_namenum2netstrfns(const char *name);
+
char *
libcfs_next_nidstring(void)
{
}
EXPORT_SYMBOL(libcfs_next_nidstring);
-static int libcfs_lo_str2addr(const char *str, int nob, __u32 *addr)
-{
- *addr = 0;
- return 1;
-}
+/**
+ * Nid range list syntax.
+ * \verbatim
+ *
+ * <nidlist> :== <nidrange> [ ' ' <nidrange> ]
+ * <nidrange> :== <addrrange> '@' <net>
+ * <addrrange> :== '*' |
+ * <ipaddr_range> |
+ * <cfs_expr_list>
+ * <ipaddr_range> :== <cfs_expr_list>.<cfs_expr_list>.<cfs_expr_list>.
+ * <cfs_expr_list>
+ * <cfs_expr_list> :== <number> |
+ * <expr_list>
+ * <expr_list> :== '[' <range_expr> [ ',' <range_expr>] ']'
+ * <range_expr> :== <number> |
+ * <number> '-' <number> |
+ * <number> '-' <number> '/' <number>
+ * <net> :== <netname> | <netname><number>
+ * <netname> :== "lo" | "tcp" | "o2ib" | "cib" | "openib" | "iib" |
+ * "vib" | "ra" | "elan" | "mx" | "ptl"
+ * \endverbatim
+ */
-static void libcfs_ip_addr2str(__u32 addr, char *str)
-{
- snprintf(str, LNET_NIDSTR_SIZE, "%u.%u.%u.%u",
- (addr >> 24) & 0xff, (addr >> 16) & 0xff,
- (addr >> 8) & 0xff, addr & 0xff);
-}
+/**
+ * Structure to represent \<nidrange\> token of the syntax.
+ *
+ * One of this is created for each \<net\> parsed.
+ */
+struct nidrange {
+ /**
+ * Link to list of this structures which is built on nid range
+ * list parsing.
+ */
+ struct list_head nr_link;
+ /**
+ * List head for addrrange::ar_link.
+ */
+ struct list_head nr_addrranges;
+ /**
+ * Flag indicating that *@<net> is found.
+ */
+ int nr_all;
+ /**
+ * Pointer to corresponding element of libcfs_netstrfns.
+ */
+ struct netstrfns *nr_netstrfns;
+ /**
+ * Number of network. E.g. 5 if \<net\> is "elan5".
+ */
+ int nr_netnum;
+};
+
+/**
+ * Structure to represent \<addrrange\> token of the syntax.
+ */
+struct addrrange {
+ /**
+ * Link to nidrange::nr_addrranges.
+ */
+ struct list_head ar_link;
+ /**
+ * List head for cfs_expr_list::el_list.
+ */
+ struct list_head ar_numaddr_ranges;
+};
-static int libcfs_ip_str2addr(const char *str, int nob, __u32 *addr)
+/**
+ * Parses \<addrrange\> token on the syntax.
+ *
+ * Allocates struct addrrange and links to \a nidrange via
+ * (nidrange::nr_addrranges)
+ *
+ * \retval 0 if \a src parses to '*' | \<ipaddr_range\> | \<cfs_expr_list\>
+ * \retval -errno otherwise
+ */
+static int
+parse_addrange(const struct cfs_lstr *src, struct nidrange *nidrange)
{
- unsigned int a;
- unsigned int b;
- unsigned int c;
- unsigned int d;
- int n = nob; /* XscanfX */
+ struct addrrange *addrrange;
- /* numeric IP? */
- if (sscanf(str, "%u.%u.%u.%u%n", &a, &b, &c, &d, &n) >= 4 &&
- n == nob &&
- (a & ~0xff) == 0 && (b & ~0xff) == 0 &&
- (c & ~0xff) == 0 && (d & ~0xff) == 0) {
- *addr = ((a<<24)|(b<<16)|(c<<8)|d);
- return 1;
+ if (src->ls_len == 1 && src->ls_str[0] == '*') {
+ nidrange->nr_all = 1;
+ return 0;
}
- return 0;
+ LIBCFS_ALLOC(addrrange, sizeof(struct addrrange));
+ if (addrrange == NULL)
+ return -ENOMEM;
+ list_add_tail(&addrrange->ar_link, &nidrange->nr_addrranges);
+ INIT_LIST_HEAD(&addrrange->ar_numaddr_ranges);
+
+ return nidrange->nr_netstrfns->nf_parse_addrlist(src->ls_str,
+ src->ls_len,
+ &addrrange->ar_numaddr_ranges);
}
-int
-cfs_ip_addr_parse(char *str, int len, struct list_head *list)
+/**
+ * Finds or creates struct nidrange.
+ *
+ * Checks if \a src is a valid network name, looks for corresponding
+ * nidrange on the ist of nidranges (\a nidlist), creates new struct
+ * nidrange if it is not found.
+ *
+ * \retval pointer to struct nidrange matching network specified via \a src
+ * \retval NULL if \a src does not match any network
+ */
+static struct nidrange *
+add_nidrange(const struct cfs_lstr *src,
+ struct list_head *nidlist)
{
- struct cfs_expr_list *el;
- struct cfs_lstr src;
- int rc;
- int i;
-
- src.ls_str = str;
- src.ls_len = len;
- i = 0;
-
- while (src.ls_str != NULL) {
- struct cfs_lstr res;
-
- if (!cfs_gettok(&src, '.', &res)) {
- rc = -EINVAL;
- goto out;
- }
+ struct netstrfns *nf;
+ struct nidrange *nr;
+ int endlen;
+ unsigned netnum;
- rc = cfs_expr_list_parse(res.ls_str, res.ls_len, 0, 255, &el);
- if (rc != 0)
- goto out;
+ if (src->ls_len >= LNET_NIDSTR_SIZE)
+ return NULL;
- list_add_tail(&el->el_link, list);
- i++;
+ nf = libcfs_namenum2netstrfns(src->ls_str);
+ if (nf == NULL)
+ return NULL;
+ endlen = src->ls_len - strlen(nf->nf_name);
+ if (endlen == 0)
+ /* network name only, e.g. "elan" or "tcp" */
+ netnum = 0;
+ else {
+ /* e.g. "elan25" or "tcp23", refuse to parse if
+ * network name is not appended with decimal or
+ * hexadecimal number */
+ if (!cfs_str2num_check(src->ls_str + strlen(nf->nf_name),
+ endlen, &netnum, 0, MAX_NUMERIC_VALUE))
+ return NULL;
}
- if (i == 4)
- return 0;
-
- rc = -EINVAL;
-out:
- cfs_expr_list_free_list(list);
-
- return rc;
-}
+ list_for_each_entry(nr, nidlist, nr_link) {
+ if (nr->nr_netstrfns != nf)
+ continue;
+ if (nr->nr_netnum != netnum)
+ continue;
+ return nr;
+ }
-static int
-libcfs_ip_addr_range_print(char *buffer, int count, struct list_head *list)
-{
- int i = 0, j = 0;
- struct cfs_expr_list *el;
+ LIBCFS_ALLOC(nr, sizeof(struct nidrange));
+ if (nr == NULL)
+ return NULL;
+ list_add_tail(&nr->nr_link, nidlist);
+ INIT_LIST_HEAD(&nr->nr_addrranges);
+ nr->nr_netstrfns = nf;
+ nr->nr_all = 0;
+ nr->nr_netnum = netnum;
- list_for_each_entry(el, list, el_link) {
- LASSERT(j++ < 4);
- if (i != 0)
- i += scnprintf(buffer + i, count - i, ".");
- i += cfs_expr_list_print(buffer + i, count - i, el);
- }
- return i;
+ return nr;
}
/**
- * Matches address (\a addr) against address set encoded in \a list.
+ * Parses \<nidrange\> token of the syntax.
*
- * \retval 1 if \a addr matches
+ * \retval 1 if \a src parses to \<addrrange\> '@' \<net\>
* \retval 0 otherwise
*/
-int
-cfs_ip_addr_match(__u32 addr, struct list_head *list)
-{
- struct cfs_expr_list *el;
- int i = 0;
-
- list_for_each_entry_reverse(el, list, el_link) {
- if (!cfs_expr_list_match(addr & 0xff, el))
- return 0;
- addr >>= 8;
- i++;
- }
-
- return i == 4;
-}
-
-static void libcfs_decnum_addr2str(__u32 addr, char *str)
-{
- snprintf(str, LNET_NIDSTR_SIZE, "%u", addr);
-}
-
-static void libcfs_hexnum_addr2str(__u32 addr, char *str)
+static int
+parse_nidrange(struct cfs_lstr *src, struct list_head *nidlist)
{
- snprintf(str, LNET_NIDSTR_SIZE, "0x%x", addr);
-}
+ struct cfs_lstr addrrange;
+ struct cfs_lstr net;
+ struct cfs_lstr tmp;
+ struct nidrange *nr;
-static int libcfs_num_str2addr(const char *str, int nob, __u32 *addr)
-{
- int n;
+ tmp = *src;
+ if (cfs_gettok(src, '@', &addrrange) == 0)
+ goto failed;
- n = nob;
- if (sscanf(str, "0x%x%n", addr, &n) >= 1 && n == nob)
- return 1;
+ if (cfs_gettok(src, '@', &net) == 0 || src->ls_str != NULL)
+ goto failed;
- n = nob;
- if (sscanf(str, "0X%x%n", addr, &n) >= 1 && n == nob)
- return 1;
+ nr = add_nidrange(&net, nidlist);
+ if (nr == NULL)
+ goto failed;
- n = nob;
- if (sscanf(str, "%u%n", addr, &n) >= 1 && n == nob)
- return 1;
+ if (parse_addrange(&addrrange, nr) != 0)
+ goto failed;
+ return 1;
+failed:
+ CWARN("can't parse nidrange: \"%.*s\"\n", tmp.ls_len, tmp.ls_str);
return 0;
}
/**
- * Nf_parse_addrlist method for networks using numeric addresses.
+ * Frees addrrange structures of \a list.
*
- * Examples of such networks are gm and elan.
+ * For each struct addrrange structure found on \a list it frees
+ * cfs_expr_list list attached to it and frees the addrrange itself.
*
- * \retval 0 if \a str parsed to numeric address
+ * \retval none
+ */
+static void
+free_addrranges(struct list_head *list)
+{
+ while (!list_empty(list)) {
+ struct addrrange *ar;
+
+ ar = list_entry(list->next, struct addrrange, ar_link);
+
+ cfs_expr_list_free_list(&ar->ar_numaddr_ranges);
+ list_del(&ar->ar_link);
+ LIBCFS_FREE(ar, sizeof(struct addrrange));
+ }
+}
+
+/**
+ * Frees nidrange strutures of \a list.
+ *
+ * For each struct nidrange structure found on \a list it frees
+ * addrrange list attached to it and frees the nidrange itself.
+ *
+ * \retval none
+ */
+void
+cfs_free_nidlist(struct list_head *list)
+{
+ struct list_head *pos, *next;
+ struct nidrange *nr;
+
+ list_for_each_safe(pos, next, list) {
+ nr = list_entry(pos, struct nidrange, nr_link);
+ free_addrranges(&nr->nr_addrranges);
+ list_del(pos);
+ LIBCFS_FREE(nr, sizeof(struct nidrange));
+ }
+}
+EXPORT_SYMBOL(cfs_free_nidlist);
+
+/**
+ * Parses nid range list.
+ *
+ * Parses with rigorous syntax and overflow checking \a str into
+ * \<nidrange\> [ ' ' \<nidrange\> ], compiles \a str into set of
+ * structures and links that structure to \a nidlist. The resulting
+ * list can be used to match a NID againts set of NIDS defined by \a
+ * str.
+ * \see cfs_match_nid
+ *
+ * \retval 1 on success
+ * \retval 0 otherwise
+ */
+int
+cfs_parse_nidlist(char *str, int len, struct list_head *nidlist)
+{
+ struct cfs_lstr src;
+ struct cfs_lstr res;
+ int rc;
+
+ src.ls_str = str;
+ src.ls_len = len;
+ INIT_LIST_HEAD(nidlist);
+ while (src.ls_str) {
+ rc = cfs_gettok(&src, ' ', &res);
+ if (rc == 0) {
+ cfs_free_nidlist(nidlist);
+ return 0;
+ }
+ rc = parse_nidrange(&res, nidlist);
+ if (rc == 0) {
+ cfs_free_nidlist(nidlist);
+ return 0;
+ }
+ }
+ return 1;
+}
+EXPORT_SYMBOL(cfs_parse_nidlist);
+
+/**
+ * Matches a nid (\a nid) against the compiled list of nidranges (\a nidlist).
+ *
+ * \see cfs_parse_nidlist()
+ *
+ * \retval 1 on match
+ * \retval 0 otherwises
+ */
+int cfs_match_nid(lnet_nid_t nid, struct list_head *nidlist)
+{
+ struct nidrange *nr;
+ struct addrrange *ar;
+
+ list_for_each_entry(nr, nidlist, nr_link) {
+ if (nr->nr_netstrfns->nf_type != LNET_NETTYP(LNET_NIDNET(nid)))
+ continue;
+ if (nr->nr_netnum != LNET_NETNUM(LNET_NIDNET(nid)))
+ continue;
+ if (nr->nr_all)
+ return 1;
+ list_for_each_entry(ar, &nr->nr_addrranges, ar_link)
+ if (nr->nr_netstrfns->nf_match_addr(LNET_NIDADDR(nid),
+ &ar->ar_numaddr_ranges))
+ return 1;
+ }
+ return 0;
+}
+EXPORT_SYMBOL(cfs_match_nid);
+
+/**
+ * Print the network part of the nidrange \a nr into the specified \a buffer.
+ *
+ * \retval number of characters written
+ */
+static int
+cfs_print_network(char *buffer, int count, struct nidrange *nr)
+{
+ struct netstrfns *nf = nr->nr_netstrfns;
+
+ if (nr->nr_netnum == 0)
+ return scnprintf(buffer, count, "@%s", nf->nf_name);
+ else
+ return scnprintf(buffer, count, "@%s%u",
+ nf->nf_name, nr->nr_netnum);
+}
+
+/**
+ * Print a list of addrrange (\a addrranges) into the specified \a buffer.
+ * At max \a count characters can be printed into \a buffer.
+ *
+ * \retval number of characters written
+ */
+static int
+cfs_print_addrranges(char *buffer, int count, struct list_head *addrranges,
+ struct nidrange *nr)
+{
+ int i = 0;
+ struct addrrange *ar;
+ struct netstrfns *nf = nr->nr_netstrfns;
+
+ list_for_each_entry(ar, addrranges, ar_link) {
+ if (i != 0)
+ i += scnprintf(buffer + i, count - i, " ");
+ i += nf->nf_print_addrlist(buffer + i, count - i,
+ &ar->ar_numaddr_ranges);
+ i += cfs_print_network(buffer + i, count - i, nr);
+ }
+ return i;
+}
+
+/**
+ * Print a list of nidranges (\a nidlist) into the specified \a buffer.
+ * At max \a count characters can be printed into \a buffer.
+ * Nidranges are separated by a space character.
+ *
+ * \retval number of characters written
+ */
+int cfs_print_nidlist(char *buffer, int count, struct list_head *nidlist)
+{
+ int i = 0;
+ struct nidrange *nr;
+
+ if (count <= 0)
+ return 0;
+
+ list_for_each_entry(nr, nidlist, nr_link) {
+ if (i != 0)
+ i += scnprintf(buffer + i, count - i, " ");
+
+ if (nr->nr_all != 0) {
+ LASSERT(list_empty(&nr->nr_addrranges));
+ i += scnprintf(buffer + i, count - i, "*");
+ i += cfs_print_network(buffer + i, count - i, nr);
+ } else {
+ i += cfs_print_addrranges(buffer + i, count - i,
+ &nr->nr_addrranges, nr);
+ }
+ }
+ return i;
+}
+EXPORT_SYMBOL(cfs_print_nidlist);
+
+static int
+libcfs_lo_str2addr(const char *str, int nob, __u32 *addr)
+{
+ *addr = 0;
+ return 1;
+}
+
+static void
+libcfs_ip_addr2str(__u32 addr, char *str)
+{
+ snprintf(str, LNET_NIDSTR_SIZE, "%u.%u.%u.%u",
+ (addr >> 24) & 0xff, (addr >> 16) & 0xff,
+ (addr >> 8) & 0xff, addr & 0xff);
+}
+
+/* CAVEAT EMPTOR XscanfX
+ * I use "%n" at the end of a sscanf format to detect trailing junk. However
+ * sscanf may return immediately if it sees the terminating '0' in a string, so
+ * I initialise the %n variable to the expected length. If sscanf sets it;
+ * fine, if it doesn't, then the scan ended at the end of the string, which is
+ * fine too :) */
+static int
+libcfs_ip_str2addr(const char *str, int nob, __u32 *addr)
+{
+ unsigned int a;
+ unsigned int b;
+ unsigned int c;
+ unsigned int d;
+ int n = nob; /* XscanfX */
+
+ /* numeric IP? */
+ if (sscanf(str, "%u.%u.%u.%u%n", &a, &b, &c, &d, &n) >= 4 &&
+ n == nob &&
+ (a & ~0xff) == 0 && (b & ~0xff) == 0 &&
+ (c & ~0xff) == 0 && (d & ~0xff) == 0) {
+ *addr = ((a<<24)|(b<<16)|(c<<8)|d);
+ return 1;
+ }
+
+ return 0;
+}
+
+/* Used by lnet/config.c so it can't be static */
+int
+cfs_ip_addr_parse(char *str, int len, struct list_head *list)
+{
+ struct cfs_expr_list *el;
+ struct cfs_lstr src;
+ int rc;
+ int i;
+
+ src.ls_str = str;
+ src.ls_len = len;
+ i = 0;
+
+ while (src.ls_str != NULL) {
+ struct cfs_lstr res;
+
+ if (!cfs_gettok(&src, '.', &res)) {
+ rc = -EINVAL;
+ goto out;
+ }
+
+ rc = cfs_expr_list_parse(res.ls_str, res.ls_len, 0, 255, &el);
+ if (rc != 0)
+ goto out;
+
+ list_add_tail(&el->el_link, list);
+ i++;
+ }
+
+ if (i == 4)
+ return 0;
+
+ rc = -EINVAL;
+out:
+ cfs_expr_list_free_list(list);
+
+ return rc;
+}
+
+static int
+libcfs_ip_addr_range_print(char *buffer, int count, struct list_head *list)
+{
+ int i = 0, j = 0;
+ struct cfs_expr_list *el;
+
+ list_for_each_entry(el, list, el_link) {
+ LASSERT(j++ < 4);
+ if (i != 0)
+ i += scnprintf(buffer + i, count - i, ".");
+ i += cfs_expr_list_print(buffer + i, count - i, el);
+ }
+ return i;
+}
+
+/**
+ * Matches address (\a addr) against address set encoded in \a list.
+ *
+ * \retval 1 if \a addr matches
+ * \retval 0 otherwise
+ */
+int
+cfs_ip_addr_match(__u32 addr, struct list_head *list)
+{
+ struct cfs_expr_list *el;
+ int i = 0;
+
+ list_for_each_entry_reverse(el, list, el_link) {
+ if (!cfs_expr_list_match(addr & 0xff, el))
+ return 0;
+ addr >>= 8;
+ i++;
+ }
+
+ return i == 4;
+}
+
+static void
+libcfs_decnum_addr2str(__u32 addr, char *str)
+{
+ snprintf(str, LNET_NIDSTR_SIZE, "%u", addr);
+}
+
+static void
+libcfs_hexnum_addr2str(__u32 addr, char *str)
+{
+ snprintf(str, LNET_NIDSTR_SIZE, "0x%x", addr);
+}
+
+static int
+libcfs_num_str2addr(const char *str, int nob, __u32 *addr)
+{
+ int n;
+
+ n = nob;
+ if (sscanf(str, "0x%x%n", addr, &n) >= 1 && n == nob)
+ return 1;
+
+ n = nob;
+ if (sscanf(str, "0X%x%n", addr, &n) >= 1 && n == nob)
+ return 1;
+
+ n = nob;
+ if (sscanf(str, "%u%n", addr, &n) >= 1 && n == nob)
+ return 1;
+
+ return 0;
+}
+
+/**
+ * Nf_parse_addrlist method for networks using numeric addresses.
+ *
+ * Examples of such networks are gm and elan.
+ *
+ * \retval 0 if \a str parsed to numeric address
* \retval errno otherwise
*/
static int
/* .nf_parse_addrlist*/ libcfs_num_parse,
/* .nf_print_addrlist*/ libcfs_num_addr_range_print,
/* .nf_match_addr*/ libcfs_num_match},
- /* placeholder for net0 alias. It MUST BE THE LAST ENTRY */
- {/* .nf_type */ -1},
-};
-
-static const int libcfs_nnetstrfns = ARRAY_SIZE(libcfs_netstrfns);
-
-/* CAVEAT EMPTOR XscanfX
- * I use "%n" at the end of a sscanf format to detect trailing junk. However
- * sscanf may return immediately if it sees the terminating '0' in a string, so
- * I initialise the %n variable to the expected length. If sscanf sets it;
- * fine, if it doesn't, then the scan ended at the end of the string, which is
- * fine too :) */
-
-static struct netstrfns *
-libcfs_lnd2netstrfns(int lnd)
-{
- int i;
-
- if (lnd >= 0)
- for (i = 0; i < libcfs_nnetstrfns; i++)
- if (lnd == libcfs_netstrfns[i].nf_type)
- return &libcfs_netstrfns[i];
-
- return NULL;
-}
-
-static struct netstrfns *
-libcfs_namenum2netstrfns(const char *name)
-{
- struct netstrfns *nf;
- int i;
-
- for (i = 0; i < libcfs_nnetstrfns; i++) {
- nf = &libcfs_netstrfns[i];
- if (nf->nf_type >= 0 &&
- !strncmp(name, nf->nf_name, strlen(nf->nf_name)))
- return nf;
- }
- return NULL;
-}
-
-static struct netstrfns *
-libcfs_name2netstrfns(const char *name)
-{
- int i;
-
- for (i = 0; i < libcfs_nnetstrfns; i++)
- if (libcfs_netstrfns[i].nf_type >= 0 &&
- !strcmp(libcfs_netstrfns[i].nf_name, name))
- return &libcfs_netstrfns[i];
-
- return NULL;
-}
-
-int
-libcfs_isknown_lnd(int type)
-{
- return libcfs_lnd2netstrfns(type) != NULL;
-}
-EXPORT_SYMBOL(libcfs_isknown_lnd);
-
-char *
-libcfs_lnd2modname(int lnd)
-{
- struct netstrfns *nf = libcfs_lnd2netstrfns(lnd);
-
- return (nf == NULL) ? NULL : nf->nf_modname;
-}
-EXPORT_SYMBOL(libcfs_lnd2modname);
-
-char *
-libcfs_lnd2str(int lnd)
-{
- char *str;
- struct netstrfns *nf = libcfs_lnd2netstrfns(lnd);
-
- if (nf != NULL)
- return nf->nf_name;
-
- str = libcfs_next_nidstring();
- snprintf(str, LNET_NIDSTR_SIZE, "?%d?", lnd);
- return str;
-}
-EXPORT_SYMBOL(libcfs_lnd2str);
-
-int
-libcfs_str2lnd(const char *str)
-{
- struct netstrfns *nf = libcfs_name2netstrfns(str);
-
- if (nf != NULL)
- return nf->nf_type;
-
- return -1;
-}
-EXPORT_SYMBOL(libcfs_str2lnd);
-
-char *
-libcfs_net2str(__u32 net)
-{
- int lnd = LNET_NETTYP(net);
- int num = LNET_NETNUM(net);
- struct netstrfns *nf = libcfs_lnd2netstrfns(lnd);
- char *str = libcfs_next_nidstring();
-
- if (nf == NULL)
- snprintf(str, LNET_NIDSTR_SIZE, "<%d:%d>", lnd, num);
- else if (num == 0)
- snprintf(str, LNET_NIDSTR_SIZE, "%s", nf->nf_name);
- else
- snprintf(str, LNET_NIDSTR_SIZE, "%s%d", nf->nf_name, num);
-
- return str;
-}
-EXPORT_SYMBOL(libcfs_net2str);
-
-char *
-libcfs_nid2str(lnet_nid_t nid)
-{
- __u32 addr = LNET_NIDADDR(nid);
- __u32 net = LNET_NIDNET(nid);
- int lnd = LNET_NETTYP(net);
- int nnum = LNET_NETNUM(net);
- struct netstrfns *nf;
- char *str;
- int nob;
-
- if (nid == LNET_NID_ANY)
- return "<?>";
-
- nf = libcfs_lnd2netstrfns(lnd);
- str = libcfs_next_nidstring();
-
- if (nf == NULL)
- snprintf(str, LNET_NIDSTR_SIZE, "%x@<%d:%d>", addr, lnd, nnum);
- else {
- nf->nf_addr2str(addr, str);
- nob = strlen(str);
- if (nnum == 0)
- snprintf(str + nob, LNET_NIDSTR_SIZE - nob, "@%s",
- nf->nf_name);
- else
- snprintf(str + nob, LNET_NIDSTR_SIZE - nob, "@%s%d",
- nf->nf_name, nnum);
- }
-
- return str;
-}
-EXPORT_SYMBOL(libcfs_nid2str);
-
-static struct netstrfns *
-libcfs_str2net_internal(const char *str, __u32 *net)
-{
- struct netstrfns *uninitialized_var(nf);
- int nob;
- unsigned int netnum;
- int i;
-
- for (i = 0; i < libcfs_nnetstrfns; i++) {
- nf = &libcfs_netstrfns[i];
- if (nf->nf_type >= 0 &&
- !strncmp(str, nf->nf_name, strlen(nf->nf_name)))
- break;
- }
-
- if (i == libcfs_nnetstrfns)
- return NULL;
-
- nob = strlen(nf->nf_name);
-
- if (strlen(str) == (unsigned int)nob) {
- netnum = 0;
- } else {
- if (nf->nf_type == LOLND) /* net number not allowed */
- return NULL;
-
- str += nob;
- i = strlen(str);
- if (sscanf(str, "%u%n", &netnum, &i) < 1 ||
- i != (int)strlen(str))
- return NULL;
- }
-
- *net = LNET_MKNET(nf->nf_type, netnum);
- return nf;
-}
-
-__u32
-libcfs_str2net(const char *str)
-{
- __u32 net;
-
- if (libcfs_str2net_internal(str, &net) != NULL)
- return net;
-
- return LNET_NIDNET(LNET_NID_ANY);
-}
-EXPORT_SYMBOL(libcfs_str2net);
-
-lnet_nid_t
-libcfs_str2nid(const char *str)
-{
- const char *sep = strchr(str, '@');
- struct netstrfns *nf;
- __u32 net;
- __u32 addr;
-
- if (sep != NULL) {
- nf = libcfs_str2net_internal(sep + 1, &net);
- if (nf == NULL)
- return LNET_NID_ANY;
- } else {
- sep = str + strlen(str);
- net = LNET_MKNET(SOCKLND, 0);
- nf = libcfs_lnd2netstrfns(SOCKLND);
- LASSERT(nf != NULL);
- }
-
- if (!nf->nf_str2addr(str, (int)(sep - str), &addr))
- return LNET_NID_ANY;
-
- return LNET_MKNID(net, addr);
-}
-EXPORT_SYMBOL(libcfs_str2nid);
-
-char *
-libcfs_id2str(lnet_process_id_t id)
-{
- char *str = libcfs_next_nidstring();
-
- if (id.pid == LNET_PID_ANY) {
- snprintf(str, LNET_NIDSTR_SIZE,
- "LNET_PID_ANY-%s", libcfs_nid2str(id.nid));
- return str;
- }
+ /* placeholder for net0 alias. It MUST BE THE LAST ENTRY */
+ {/* .nf_type */ -1},
+};
- snprintf(str, LNET_NIDSTR_SIZE, "%s%u-%s",
- ((id.pid & LNET_PID_USERFLAG) != 0) ? "U" : "",
- (id.pid & ~LNET_PID_USERFLAG), libcfs_nid2str(id.nid));
- return str;
-}
-EXPORT_SYMBOL(libcfs_id2str);
+static const int libcfs_nnetstrfns = ARRAY_SIZE(libcfs_netstrfns);
-int
-libcfs_str2anynid(lnet_nid_t *nidp, const char *str)
+static struct netstrfns *
+libcfs_lnd2netstrfns(int lnd)
{
- if (!strcmp(str, "*")) {
- *nidp = LNET_NID_ANY;
- return 1;
- }
-
- *nidp = libcfs_str2nid(str);
- return *nidp != LNET_NID_ANY;
-}
-EXPORT_SYMBOL(libcfs_str2anynid);
-
-/**
- * Nid range list syntax.
- * \verbatim
- *
- * <nidlist> :== <nidrange> [ ' ' <nidrange> ]
- * <nidrange> :== <addrrange> '@' <net>
- * <addrrange> :== '*' |
- * <ipaddr_range> |
- * <cfs_expr_list>
- * <ipaddr_range> :== <cfs_expr_list>.<cfs_expr_list>.<cfs_expr_list>.
- * <cfs_expr_list>
- * <cfs_expr_list> :== <number> |
- * <expr_list>
- * <expr_list> :== '[' <range_expr> [ ',' <range_expr>] ']'
- * <range_expr> :== <number> |
- * <number> '-' <number> |
- * <number> '-' <number> '/' <number>
- * <net> :== <netname> | <netname><number>
- * <netname> :== "lo" | "tcp" | "o2ib" | "cib" | "openib" | "iib" |
- * "vib" | "ra" | "elan" | "mx" | "ptl"
- * \endverbatim
- */
+ int i;
-/**
- * Structure to represent \<nidrange\> token of the syntax.
- *
- * One of this is created for each \<net\> parsed.
- */
-struct nidrange {
- /**
- * Link to list of this structures which is built on nid range
- * list parsing.
- */
- struct list_head nr_link;
- /**
- * List head for addrrange::ar_link.
- */
- struct list_head nr_addrranges;
- /**
- * Flag indicating that *@<net> is found.
- */
- int nr_all;
- /**
- * Pointer to corresponding element of libcfs_netstrfns.
- */
- struct netstrfns *nr_netstrfns;
- /**
- * Number of network. E.g. 5 if \<net\> is "elan5".
- */
- int nr_netnum;
-};
+ if (lnd >= 0)
+ for (i = 0; i < libcfs_nnetstrfns; i++)
+ if (lnd == libcfs_netstrfns[i].nf_type)
+ return &libcfs_netstrfns[i];
-/**
- * Structure to represent \<addrrange\> token of the syntax.
- */
-struct addrrange {
- /**
- * Link to nidrange::nr_addrranges.
- */
- struct list_head ar_link;
- /**
- * List head for cfs_expr_list::el_list.
- */
- struct list_head ar_numaddr_ranges;
-};
+ return NULL;
+}
-/**
- * Parses \<addrrange\> token on the syntax.
- *
- * Allocates struct addrrange and links to \a nidrange via
- * (nidrange::nr_addrranges)
- *
- * \retval 0 if \a src parses to '*' | \<ipaddr_range\> | \<cfs_expr_list\>
- * \retval -errno otherwise
- */
-static int
-parse_addrange(const struct cfs_lstr *src, struct nidrange *nidrange)
+static struct netstrfns *
+libcfs_namenum2netstrfns(const char *name)
{
- struct addrrange *addrrange;
+ struct netstrfns *nf;
+ int i;
- if (src->ls_len == 1 && src->ls_str[0] == '*') {
- nidrange->nr_all = 1;
- return 0;
+ for (i = 0; i < libcfs_nnetstrfns; i++) {
+ nf = &libcfs_netstrfns[i];
+ if (nf->nf_type >= 0 &&
+ !strncmp(name, nf->nf_name, strlen(nf->nf_name)))
+ return nf;
}
-
- LIBCFS_ALLOC(addrrange, sizeof(struct addrrange));
- if (addrrange == NULL)
- return -ENOMEM;
- list_add_tail(&addrrange->ar_link, &nidrange->nr_addrranges);
- INIT_LIST_HEAD(&addrrange->ar_numaddr_ranges);
-
- return nidrange->nr_netstrfns->nf_parse_addrlist(src->ls_str,
- src->ls_len,
- &addrrange->ar_numaddr_ranges);
+ return NULL;
}
-/**
- * Finds or creates struct nidrange.
- *
- * Checks if \a src is a valid network name, looks for corresponding
- * nidrange on the ist of nidranges (\a nidlist), creates new struct
- * nidrange if it is not found.
- *
- * \retval pointer to struct nidrange matching network specified via \a src
- * \retval NULL if \a src does not match any network
- */
-static struct nidrange *
-add_nidrange(const struct cfs_lstr *src,
- struct list_head *nidlist)
+static struct netstrfns *
+libcfs_name2netstrfns(const char *name)
{
- struct netstrfns *nf;
- struct nidrange *nr;
- int endlen;
- unsigned netnum;
+ int i;
- if (src->ls_len >= LNET_NIDSTR_SIZE)
- return NULL;
+ for (i = 0; i < libcfs_nnetstrfns; i++)
+ if (libcfs_netstrfns[i].nf_type >= 0 &&
+ !strcmp(libcfs_netstrfns[i].nf_name, name))
+ return &libcfs_netstrfns[i];
- nf = libcfs_namenum2netstrfns(src->ls_str);
- if (nf == NULL)
- return NULL;
- endlen = src->ls_len - strlen(nf->nf_name);
- if (endlen == 0)
- /* network name only, e.g. "elan" or "tcp" */
- netnum = 0;
- else {
- /* e.g. "elan25" or "tcp23", refuse to parse if
- * network name is not appended with decimal or
- * hexadecimal number */
- if (!cfs_str2num_check(src->ls_str + strlen(nf->nf_name),
- endlen, &netnum, 0, MAX_NUMERIC_VALUE))
- return NULL;
- }
+ return NULL;
+}
- list_for_each_entry(nr, nidlist, nr_link) {
- if (nr->nr_netstrfns != nf)
- continue;
- if (nr->nr_netnum != netnum)
- continue;
- return nr;
- }
+int
+libcfs_isknown_lnd(int type)
+{
+ return libcfs_lnd2netstrfns(type) != NULL;
+}
+EXPORT_SYMBOL(libcfs_isknown_lnd);
- LIBCFS_ALLOC(nr, sizeof(struct nidrange));
- if (nr == NULL)
- return NULL;
- list_add_tail(&nr->nr_link, nidlist);
- INIT_LIST_HEAD(&nr->nr_addrranges);
- nr->nr_netstrfns = nf;
- nr->nr_all = 0;
- nr->nr_netnum = netnum;
+char *
+libcfs_lnd2modname(int lnd)
+{
+ struct netstrfns *nf = libcfs_lnd2netstrfns(lnd);
- return nr;
+ return (nf == NULL) ? NULL : nf->nf_modname;
}
+EXPORT_SYMBOL(libcfs_lnd2modname);
-/**
- * Parses \<nidrange\> token of the syntax.
- *
- * \retval 1 if \a src parses to \<addrrange\> '@' \<net\>
- * \retval 0 otherwise
- */
-static int
-parse_nidrange(struct cfs_lstr *src, struct list_head *nidlist)
+char *
+libcfs_lnd2str(int lnd)
{
- struct cfs_lstr addrrange;
- struct cfs_lstr net;
- struct cfs_lstr tmp;
- struct nidrange *nr;
+ char *str;
+ struct netstrfns *nf = libcfs_lnd2netstrfns(lnd);
- tmp = *src;
- if (cfs_gettok(src, '@', &addrrange) == 0)
- goto failed;
+ if (nf != NULL)
+ return nf->nf_name;
- if (cfs_gettok(src, '@', &net) == 0 || src->ls_str != NULL)
- goto failed;
+ str = libcfs_next_nidstring();
+ snprintf(str, LNET_NIDSTR_SIZE, "?%d?", lnd);
+ return str;
+}
+EXPORT_SYMBOL(libcfs_lnd2str);
- nr = add_nidrange(&net, nidlist);
- if (nr == NULL)
- goto failed;
+int
+libcfs_str2lnd(const char *str)
+{
+ struct netstrfns *nf = libcfs_name2netstrfns(str);
- if (parse_addrange(&addrrange, nr) != 0)
- goto failed;
+ if (nf != NULL)
+ return nf->nf_type;
- return 1;
- failed:
- CWARN("can't parse nidrange: \"%.*s\"\n", tmp.ls_len, tmp.ls_str);
- return 0;
+ return -1;
}
+EXPORT_SYMBOL(libcfs_str2lnd);
-/**
- * Frees addrrange structures of \a list.
- *
- * For each struct addrrange structure found on \a list it frees
- * cfs_expr_list list attached to it and frees the addrrange itself.
- *
- * \retval none
- */
-static void
-free_addrranges(struct list_head *list)
+char *
+libcfs_net2str(__u32 net)
{
- while (!list_empty(list)) {
- struct addrrange *ar;
+ int lnd = LNET_NETTYP(net);
+ int num = LNET_NETNUM(net);
+ struct netstrfns *nf = libcfs_lnd2netstrfns(lnd);
+ char *str = libcfs_next_nidstring();
- ar = list_entry(list->next, struct addrrange, ar_link);
+ if (nf == NULL)
+ snprintf(str, LNET_NIDSTR_SIZE, "<%d:%d>", lnd, num);
+ else if (num == 0)
+ snprintf(str, LNET_NIDSTR_SIZE, "%s", nf->nf_name);
+ else
+ snprintf(str, LNET_NIDSTR_SIZE, "%s%d", nf->nf_name, num);
- cfs_expr_list_free_list(&ar->ar_numaddr_ranges);
- list_del(&ar->ar_link);
- LIBCFS_FREE(ar, sizeof(struct addrrange));
- }
+ return str;
}
+EXPORT_SYMBOL(libcfs_net2str);
-/**
- * Frees nidrange strutures of \a list.
- *
- * For each struct nidrange structure found on \a list it frees
- * addrrange list attached to it and frees the nidrange itself.
- *
- * \retval none
- */
-void
-cfs_free_nidlist(struct list_head *list)
+char *
+libcfs_nid2str(lnet_nid_t nid)
{
- struct list_head *pos, *next;
- struct nidrange *nr;
+ __u32 addr = LNET_NIDADDR(nid);
+ __u32 net = LNET_NIDNET(nid);
+ int lnd = LNET_NETTYP(net);
+ int nnum = LNET_NETNUM(net);
+ struct netstrfns *nf;
+ char *str;
+ int nob;
- list_for_each_safe(pos, next, list) {
- nr = list_entry(pos, struct nidrange, nr_link);
- free_addrranges(&nr->nr_addrranges);
- list_del(pos);
- LIBCFS_FREE(nr, sizeof(struct nidrange));
+ if (nid == LNET_NID_ANY)
+ return "<?>";
+
+ nf = libcfs_lnd2netstrfns(lnd);
+ str = libcfs_next_nidstring();
+
+ if (nf == NULL)
+ snprintf(str, LNET_NIDSTR_SIZE, "%x@<%d:%d>", addr, lnd, nnum);
+ else {
+ nf->nf_addr2str(addr, str);
+ nob = strlen(str);
+ if (nnum == 0)
+ snprintf(str + nob, LNET_NIDSTR_SIZE - nob, "@%s",
+ nf->nf_name);
+ else
+ snprintf(str + nob, LNET_NIDSTR_SIZE - nob, "@%s%d",
+ nf->nf_name, nnum);
}
+
+ return str;
}
-EXPORT_SYMBOL(cfs_free_nidlist);
+EXPORT_SYMBOL(libcfs_nid2str);
-/**
- * Parses nid range list.
- *
- * Parses with rigorous syntax and overflow checking \a str into
- * \<nidrange\> [ ' ' \<nidrange\> ], compiles \a str into set of
- * structures and links that structure to \a nidlist. The resulting
- * list can be used to match a NID againts set of NIDS defined by \a
- * str.
- * \see cfs_match_nid
- *
- * \retval 1 on success
- * \retval 0 otherwise
- */
-int
-cfs_parse_nidlist(char *str, int len, struct list_head *nidlist)
+static struct netstrfns *
+libcfs_str2net_internal(const char *str, __u32 *net)
{
- struct cfs_lstr src;
- struct cfs_lstr res;
- int rc;
+ struct netstrfns *uninitialized_var(nf);
+ int nob;
+ unsigned int netnum;
+ int i;
- src.ls_str = str;
- src.ls_len = len;
- INIT_LIST_HEAD(nidlist);
- while (src.ls_str) {
- rc = cfs_gettok(&src, ' ', &res);
- if (rc == 0) {
- cfs_free_nidlist(nidlist);
- return 0;
- }
- rc = parse_nidrange(&res, nidlist);
- if (rc == 0) {
- cfs_free_nidlist(nidlist);
- return 0;
- }
+ for (i = 0; i < libcfs_nnetstrfns; i++) {
+ nf = &libcfs_netstrfns[i];
+ if (nf->nf_type >= 0 &&
+ !strncmp(str, nf->nf_name, strlen(nf->nf_name)))
+ break;
}
- return 1;
-}
-EXPORT_SYMBOL(cfs_parse_nidlist);
-/**
- * Matches a nid (\a nid) against the compiled list of nidranges (\a nidlist).
- *
- * \see cfs_parse_nidlist()
- *
- * \retval 1 on match
- * \retval 0 otherwises
- */
-int cfs_match_nid(lnet_nid_t nid, struct list_head *nidlist)
-{
- struct nidrange *nr;
- struct addrrange *ar;
+ if (i == libcfs_nnetstrfns)
+ return NULL;
- list_for_each_entry(nr, nidlist, nr_link) {
- if (nr->nr_netstrfns->nf_type != LNET_NETTYP(LNET_NIDNET(nid)))
- continue;
- if (nr->nr_netnum != LNET_NETNUM(LNET_NIDNET(nid)))
- continue;
- if (nr->nr_all)
- return 1;
- list_for_each_entry(ar, &nr->nr_addrranges, ar_link)
- if (nr->nr_netstrfns->nf_match_addr(LNET_NIDADDR(nid),
- &ar->ar_numaddr_ranges))
- return 1;
+ nob = strlen(nf->nf_name);
+
+ if (strlen(str) == (unsigned int)nob) {
+ netnum = 0;
+ } else {
+ if (nf->nf_type == LOLND) /* net number not allowed */
+ return NULL;
+
+ str += nob;
+ i = strlen(str);
+ if (sscanf(str, "%u%n", &netnum, &i) < 1 ||
+ i != (int)strlen(str))
+ return NULL;
}
- return 0;
+
+ *net = LNET_MKNET(nf->nf_type, netnum);
+ return nf;
}
-EXPORT_SYMBOL(cfs_match_nid);
-/**
- * Print the network part of the nidrange \a nr into the specified \a buffer.
- *
- * \retval number of characters written
- */
-static int
-cfs_print_network(char *buffer, int count, struct nidrange *nr)
+__u32
+libcfs_str2net(const char *str)
{
- struct netstrfns *nf = nr->nr_netstrfns;
+ __u32 net;
- if (nr->nr_netnum == 0)
- return scnprintf(buffer, count, "@%s", nf->nf_name);
- else
- return scnprintf(buffer, count, "@%s%u",
- nf->nf_name, nr->nr_netnum);
+ if (libcfs_str2net_internal(str, &net) != NULL)
+ return net;
+
+ return LNET_NIDNET(LNET_NID_ANY);
}
+EXPORT_SYMBOL(libcfs_str2net);
-/**
- * Print a list of addrrange (\a addrranges) into the specified \a buffer.
- * At max \a count characters can be printed into \a buffer.
- *
- * \retval number of characters written
- */
-static int
-cfs_print_addrranges(char *buffer, int count, struct list_head *addrranges,
- struct nidrange *nr)
+lnet_nid_t
+libcfs_str2nid(const char *str)
{
- int i = 0;
- struct addrrange *ar;
- struct netstrfns *nf = nr->nr_netstrfns;
+ const char *sep = strchr(str, '@');
+ struct netstrfns *nf;
+ __u32 net;
+ __u32 addr;
- list_for_each_entry(ar, addrranges, ar_link) {
- if (i != 0)
- i += scnprintf(buffer + i, count - i, " ");
- i += nf->nf_print_addrlist(buffer + i, count - i,
- &ar->ar_numaddr_ranges);
- i += cfs_print_network(buffer + i, count - i, nr);
+ if (sep != NULL) {
+ nf = libcfs_str2net_internal(sep + 1, &net);
+ if (nf == NULL)
+ return LNET_NID_ANY;
+ } else {
+ sep = str + strlen(str);
+ net = LNET_MKNET(SOCKLND, 0);
+ nf = libcfs_lnd2netstrfns(SOCKLND);
+ LASSERT(nf != NULL);
}
- return i;
+
+ if (!nf->nf_str2addr(str, (int)(sep - str), &addr))
+ return LNET_NID_ANY;
+
+ return LNET_MKNID(net, addr);
}
+EXPORT_SYMBOL(libcfs_str2nid);
-/**
- * Print a list of nidranges (\a nidlist) into the specified \a buffer.
- * At max \a count characters can be printed into \a buffer.
- * Nidranges are separated by a space character.
- *
- * \retval number of characters written
- */
-int cfs_print_nidlist(char *buffer, int count, struct list_head *nidlist)
+char *
+libcfs_id2str(lnet_process_id_t id)
{
- int i = 0;
- struct nidrange *nr;
+ char *str = libcfs_next_nidstring();
- if (count <= 0)
- return 0;
+ if (id.pid == LNET_PID_ANY) {
+ snprintf(str, LNET_NIDSTR_SIZE,
+ "LNET_PID_ANY-%s", libcfs_nid2str(id.nid));
+ return str;
+ }
- list_for_each_entry(nr, nidlist, nr_link) {
- if (i != 0)
- i += scnprintf(buffer + i, count - i, " ");
+ snprintf(str, LNET_NIDSTR_SIZE, "%s%u-%s",
+ ((id.pid & LNET_PID_USERFLAG) != 0) ? "U" : "",
+ (id.pid & ~LNET_PID_USERFLAG), libcfs_nid2str(id.nid));
+ return str;
+}
+EXPORT_SYMBOL(libcfs_id2str);
- if (nr->nr_all != 0) {
- LASSERT(list_empty(&nr->nr_addrranges));
- i += scnprintf(buffer + i, count - i, "*");
- i += cfs_print_network(buffer + i, count - i, nr);
- } else {
- i += cfs_print_addrranges(buffer + i, count - i,
- &nr->nr_addrranges, nr);
- }
+int
+libcfs_str2anynid(lnet_nid_t *nidp, const char *str)
+{
+ if (!strcmp(str, "*")) {
+ *nidp = LNET_NID_ANY;
+ return 1;
}
- return i;
+
+ *nidp = libcfs_str2nid(str);
+ return *nidp != LNET_NID_ANY;
}
-EXPORT_SYMBOL(cfs_print_nidlist);
+EXPORT_SYMBOL(libcfs_str2anynid);
projects / GitHub / LineageOS / android_kernel_motorola_exynos9610.git / commitdiff