From 089c075d88ac9407b8d7c5c8fc4b21c0d940bd82 Mon Sep 17 00:00:00 2001 From: Andreas Gruenbacher Date: Tue, 14 Jun 2011 18:28:09 +0200 Subject: [PATCH] drbd: Convert the generic netlink interface to accept connection endpoints Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- drivers/block/drbd/drbd_int.h | 7 ++ drivers/block/drbd/drbd_main.c | 21 ++++ drivers/block/drbd/drbd_nl.c | 158 +++++++++++++++++------------ drivers/block/drbd/drbd_receiver.c | 21 ++-- drivers/block/drbd/drbd_state.c | 2 + include/linux/drbd_genl.h | 62 +++++------ 6 files changed, 164 insertions(+), 107 deletions(-) diff --git a/drivers/block/drbd/drbd_int.h b/drivers/block/drbd/drbd_int.h index c3019730a24f..6d6d1056d824 100644 --- a/drivers/block/drbd/drbd_int.h +++ b/drivers/block/drbd/drbd_int.h @@ -836,6 +836,11 @@ struct drbd_tconn { /* is a resource from the config file */ wait_queue_head_t ping_wait; /* Woken upon reception of a ping, and a state change */ struct res_opts res_opts; + struct sockaddr_storage my_addr; + int my_addr_len; + struct sockaddr_storage peer_addr; + int peer_addr_len; + struct drbd_socket data; /* data/barrier/cstate/parameter packets */ struct drbd_socket meta; /* ping/ack (metadata) packets */ int agreed_pro_version; /* actually used protocol version */ @@ -1377,6 +1382,8 @@ extern void drbd_minor_destroy(struct kref *kref); struct drbd_tconn *conn_create(const char *name); extern void conn_destroy(struct kref *kref); struct drbd_tconn *conn_get_by_name(const char *name); +extern struct drbd_tconn *conn_get_by_addrs(void *my_addr, int my_addr_len, + void *peer_addr, int peer_addr_len); extern void conn_free_crypto(struct drbd_tconn *tconn); extern int proc_details; diff --git a/drivers/block/drbd/drbd_main.c b/drivers/block/drbd/drbd_main.c index 178c711bc4af..79f275dc43a4 100644 --- a/drivers/block/drbd/drbd_main.c +++ b/drivers/block/drbd/drbd_main.c @@ -2420,6 +2420,27 @@ found: return tconn; } +struct drbd_tconn *conn_get_by_addrs(void *my_addr, int my_addr_len, + void *peer_addr, int peer_addr_len) +{ + struct drbd_tconn *tconn; + + rcu_read_lock(); + list_for_each_entry_rcu(tconn, &drbd_tconns, all_tconn) { + if (tconn->my_addr_len == my_addr_len && + tconn->peer_addr_len == peer_addr_len && + !memcmp(&tconn->my_addr, my_addr, my_addr_len) && + !memcmp(&tconn->peer_addr, peer_addr, peer_addr_len)) { + kref_get(&tconn->kref); + goto found; + } + } + tconn = NULL; +found: + rcu_read_unlock(); + return tconn; +} + static int drbd_alloc_socket(struct drbd_socket *socket) { socket->rbuf = (void *) __get_free_page(GFP_KERNEL); diff --git a/drivers/block/drbd/drbd_nl.c b/drivers/block/drbd/drbd_nl.c index 352be132b4be..e7933e04e7b8 100644 --- a/drivers/block/drbd/drbd_nl.c +++ b/drivers/block/drbd/drbd_nl.c @@ -94,6 +94,8 @@ static struct drbd_config_context { /* pointer into the request skb, * limited lifetime! */ char *resource_name; + struct nlattr *my_addr; + struct nlattr *peer_addr; /* reply buffer */ struct sk_buff *reply_skb; @@ -142,6 +144,7 @@ int drbd_msg_put_info(const char *info) */ #define DRBD_ADM_NEED_MINOR 1 #define DRBD_ADM_NEED_RESOURCE 2 +#define DRBD_ADM_NEED_CONNECTION 4 static int drbd_adm_prepare(struct sk_buff *skb, struct genl_info *info, unsigned flags) { @@ -174,6 +177,7 @@ static int drbd_adm_prepare(struct sk_buff *skb, struct genl_info *info, adm_ctx.reply_dh->minor = d_in->minor; adm_ctx.reply_dh->ret_code = NO_ERROR; + adm_ctx.volume = VOLUME_UNSPECIFIED; if (info->attrs[DRBD_NLA_CFG_CONTEXT]) { struct nlattr *nla; /* parse and validate only */ @@ -191,12 +195,21 @@ static int drbd_adm_prepare(struct sk_buff *skb, struct genl_info *info, /* and assign stuff to the global adm_ctx */ nla = nested_attr_tb[__nla_type(T_ctx_volume)]; - adm_ctx.volume = nla ? nla_get_u32(nla) : VOLUME_UNSPECIFIED; + if (nla) + adm_ctx.volume = nla_get_u32(nla); nla = nested_attr_tb[__nla_type(T_ctx_resource_name)]; if (nla) adm_ctx.resource_name = nla_data(nla); - } else - adm_ctx.volume = VOLUME_UNSPECIFIED; + adm_ctx.my_addr = nested_attr_tb[__nla_type(T_ctx_my_addr)]; + adm_ctx.peer_addr = nested_attr_tb[__nla_type(T_ctx_peer_addr)]; + if ((adm_ctx.my_addr && + nla_len(adm_ctx.my_addr) > sizeof(adm_ctx.tconn->my_addr)) || + (adm_ctx.peer_addr && + nla_len(adm_ctx.peer_addr) > sizeof(adm_ctx.tconn->peer_addr))) { + err = -EINVAL; + goto fail; + } + } adm_ctx.minor = d_in->minor; adm_ctx.mdev = minor_to_mdev(d_in->minor); @@ -211,6 +224,26 @@ static int drbd_adm_prepare(struct sk_buff *skb, struct genl_info *info, return ERR_INVALID_REQUEST; } + if (flags & DRBD_ADM_NEED_CONNECTION) { + if (adm_ctx.tconn && !(flags & DRBD_ADM_NEED_RESOURCE)) { + drbd_msg_put_info("no resource name expected"); + return ERR_INVALID_REQUEST; + } + if (adm_ctx.mdev) { + drbd_msg_put_info("no minor number expected"); + return ERR_INVALID_REQUEST; + } + if (adm_ctx.my_addr && adm_ctx.peer_addr) + adm_ctx.tconn = conn_get_by_addrs(nla_data(adm_ctx.my_addr), + nla_len(adm_ctx.my_addr), + nla_data(adm_ctx.peer_addr), + nla_len(adm_ctx.peer_addr)); + if (!adm_ctx.tconn) { + drbd_msg_put_info("unknown connection"); + return ERR_INVALID_REQUEST; + } + } + /* some more paranoia, if the request was over-determined */ if (adm_ctx.mdev && adm_ctx.tconn && adm_ctx.mdev->tconn != adm_ctx.tconn) { @@ -268,30 +301,28 @@ static int drbd_adm_finish(struct genl_info *info, int retcode) static void setup_khelper_env(struct drbd_tconn *tconn, char **envp) { char *afs; - struct net_conf *nc; - rcu_read_lock(); - nc = rcu_dereference(tconn->net_conf); - if (nc) { - switch (((struct sockaddr *)nc->peer_addr)->sa_family) { - case AF_INET6: - afs = "ipv6"; - snprintf(envp[4], 60, "DRBD_PEER_ADDRESS=%pI6", - &((struct sockaddr_in6 *)nc->peer_addr)->sin6_addr); - break; - case AF_INET: - afs = "ipv4"; - snprintf(envp[4], 60, "DRBD_PEER_ADDRESS=%pI4", - &((struct sockaddr_in *)nc->peer_addr)->sin_addr); - break; - default: - afs = "ssocks"; - snprintf(envp[4], 60, "DRBD_PEER_ADDRESS=%pI4", - &((struct sockaddr_in *)nc->peer_addr)->sin_addr); - } - snprintf(envp[3], 20, "DRBD_PEER_AF=%s", afs); + /* FIXME: A future version will not allow this case. */ + if (tconn->my_addr_len == 0 || tconn->peer_addr_len == 0) + return; + + switch (((struct sockaddr *)&tconn->peer_addr)->sa_family) { + case AF_INET6: + afs = "ipv6"; + snprintf(envp[4], 60, "DRBD_PEER_ADDRESS=%pI6", + &((struct sockaddr_in6 *)&tconn->peer_addr)->sin6_addr); + break; + case AF_INET: + afs = "ipv4"; + snprintf(envp[4], 60, "DRBD_PEER_ADDRESS=%pI4", + &((struct sockaddr_in *)&tconn->peer_addr)->sin_addr); + break; + default: + afs = "ssocks"; + snprintf(envp[4], 60, "DRBD_PEER_ADDRESS=%pI4", + &((struct sockaddr_in *)&tconn->peer_addr)->sin_addr); } - rcu_read_unlock(); + snprintf(envp[3], 20, "DRBD_PEER_AF=%s", afs); } int drbd_khelper(struct drbd_conf *mdev, char *cmd) @@ -1874,7 +1905,7 @@ int drbd_adm_net_opts(struct sk_buff *skb, struct genl_info *info) int rsr; /* re-sync running */ struct crypto crypto = { }; - retcode = drbd_adm_prepare(skb, info, DRBD_ADM_NEED_RESOURCE); + retcode = drbd_adm_prepare(skb, info, DRBD_ADM_NEED_CONNECTION); if (!adm_ctx.reply_skb) return retcode; if (retcode != NO_ERROR) @@ -1986,18 +2017,39 @@ int drbd_adm_connect(struct sk_buff *skb, struct genl_info *info) struct drbd_conf *mdev; struct net_conf *old_conf, *new_conf = NULL; struct crypto crypto = { }; - struct drbd_tconn *oconn; struct drbd_tconn *tconn; - struct sockaddr *new_my_addr, *new_peer_addr, *taken_addr; enum drbd_ret_code retcode; int i; int err; retcode = drbd_adm_prepare(skb, info, DRBD_ADM_NEED_RESOURCE); + if (!adm_ctx.reply_skb) return retcode; if (retcode != NO_ERROR) goto out; + if (!(adm_ctx.my_addr && adm_ctx.peer_addr)) { + drbd_msg_put_info("connection endpoint(s) missing"); + retcode = ERR_INVALID_REQUEST; + goto out; + } + + /* No need for _rcu here. All reconfiguration is + * strictly serialized on genl_lock(). We are protected against + * concurrent reconfiguration/addition/deletion */ + list_for_each_entry(tconn, &drbd_tconns, all_tconn) { + if (nla_len(adm_ctx.my_addr) == tconn->my_addr_len && + !memcmp(nla_data(adm_ctx.my_addr), &tconn->my_addr, tconn->my_addr_len)) { + retcode = ERR_LOCAL_ADDR; + goto out; + } + + if (nla_len(adm_ctx.peer_addr) == tconn->peer_addr_len && + !memcmp(nla_data(adm_ctx.peer_addr), &tconn->peer_addr, tconn->peer_addr_len)) { + retcode = ERR_PEER_ADDR; + goto out; + } + } tconn = adm_ctx.tconn; conn_reconfig_start(tconn); @@ -2027,37 +2079,6 @@ int drbd_adm_connect(struct sk_buff *skb, struct genl_info *info) if (retcode != NO_ERROR) goto fail; - retcode = NO_ERROR; - - new_my_addr = (struct sockaddr *)&new_conf->my_addr; - new_peer_addr = (struct sockaddr *)&new_conf->peer_addr; - - /* No need for _rcu here. All reconfiguration is - * strictly serialized on genl_lock(). We are protected against - * concurrent reconfiguration/addition/deletion */ - list_for_each_entry(oconn, &drbd_tconns, all_tconn) { - struct net_conf *nc; - if (oconn == tconn) - continue; - - rcu_read_lock(); - nc = rcu_dereference(oconn->net_conf); - if (nc) { - taken_addr = (struct sockaddr *)&nc->my_addr; - if (new_conf->my_addr_len == nc->my_addr_len && - !memcmp(new_my_addr, taken_addr, new_conf->my_addr_len)) - retcode = ERR_LOCAL_ADDR; - - taken_addr = (struct sockaddr *)&nc->peer_addr; - if (new_conf->peer_addr_len == nc->peer_addr_len && - !memcmp(new_peer_addr, taken_addr, new_conf->peer_addr_len)) - retcode = ERR_PEER_ADDR; - } - rcu_read_unlock(); - if (retcode != NO_ERROR) - goto fail; - } - retcode = alloc_crypto(&crypto, new_conf); if (retcode != NO_ERROR) goto fail; @@ -2083,6 +2104,11 @@ int drbd_adm_connect(struct sk_buff *skb, struct genl_info *info) tconn->csums_tfm = crypto.csums_tfm; tconn->verify_tfm = crypto.verify_tfm; + tconn->my_addr_len = nla_len(adm_ctx.my_addr); + memcpy(&tconn->my_addr, nla_data(adm_ctx.my_addr), tconn->my_addr_len); + tconn->peer_addr_len = nla_len(adm_ctx.peer_addr); + memcpy(&tconn->peer_addr, nla_data(adm_ctx.peer_addr), tconn->peer_addr_len); + mutex_unlock(&tconn->conf_update); rcu_read_lock(); @@ -2170,7 +2196,7 @@ int drbd_adm_disconnect(struct sk_buff *skb, struct genl_info *info) enum drbd_ret_code retcode; int err; - retcode = drbd_adm_prepare(skb, info, DRBD_ADM_NEED_RESOURCE); + retcode = drbd_adm_prepare(skb, info, DRBD_ADM_NEED_CONNECTION); if (!adm_ctx.reply_skb) return retcode; if (retcode != NO_ERROR) @@ -2529,7 +2555,7 @@ int drbd_adm_outdate(struct sk_buff *skb, struct genl_info *info) return drbd_adm_simple_request_state(skb, info, NS(disk, D_OUTDATED)); } -int nla_put_drbd_cfg_context(struct sk_buff *skb, const char *resource_name, unsigned vnr) +int nla_put_drbd_cfg_context(struct sk_buff *skb, struct drbd_tconn *tconn, unsigned vnr) { struct nlattr *nla; nla = nla_nest_start(skb, DRBD_NLA_CFG_CONTEXT); @@ -2537,7 +2563,11 @@ int nla_put_drbd_cfg_context(struct sk_buff *skb, const char *resource_name, uns goto nla_put_failure; if (vnr != VOLUME_UNSPECIFIED) NLA_PUT_U32(skb, T_ctx_volume, vnr); - NLA_PUT_STRING(skb, T_ctx_resource_name, resource_name); + NLA_PUT_STRING(skb, T_ctx_resource_name, tconn->name); + if (tconn->my_addr_len) + NLA_PUT(skb, T_ctx_my_addr, tconn->my_addr_len, &tconn->my_addr); + if (tconn->peer_addr_len) + NLA_PUT(skb, T_ctx_peer_addr, tconn->peer_addr_len, &tconn->peer_addr); nla_nest_end(skb, nla); return 0; @@ -2574,7 +2604,7 @@ int nla_put_status_info(struct sk_buff *skb, struct drbd_conf *mdev, /* We need to add connection name and volume number information still. * Minor number is in drbd_genlmsghdr. */ - if (nla_put_drbd_cfg_context(skb, mdev->tconn->name, mdev->vnr)) + if (nla_put_drbd_cfg_context(skb, mdev->tconn, mdev->vnr)) goto nla_put_failure; if (res_opts_to_skb(skb, &mdev->tconn->res_opts, exclude_sensitive)) @@ -2736,7 +2766,7 @@ next_tconn: /* this is a tconn without a single volume */ dh->minor = -1U; dh->ret_code = NO_ERROR; - if (nla_put_drbd_cfg_context(skb, tconn->name, VOLUME_UNSPECIFIED)) + if (nla_put_drbd_cfg_context(skb, tconn, VOLUME_UNSPECIFIED)) genlmsg_cancel(skb, dh); else genlmsg_end(skb, dh); diff --git a/drivers/block/drbd/drbd_receiver.c b/drivers/block/drbd/drbd_receiver.c index 4ba097293278..ab1d36cb6214 100644 --- a/drivers/block/drbd/drbd_receiver.c +++ b/drivers/block/drbd/drbd_receiver.c @@ -626,23 +626,21 @@ static struct socket *drbd_try_connect(struct drbd_tconn *tconn) rcu_read_unlock(); return NULL; } - sndbuf_size = nc->sndbuf_size; rcvbuf_size = nc->rcvbuf_size; connect_int = nc->connect_int; + rcu_read_unlock(); - my_addr_len = min_t(int, nc->my_addr_len, sizeof(src_in6)); - memcpy(&src_in6, nc->my_addr, my_addr_len); + my_addr_len = min_t(int, tconn->my_addr_len, sizeof(src_in6)); + memcpy(&src_in6, &tconn->my_addr, my_addr_len); - if (((struct sockaddr *)nc->my_addr)->sa_family == AF_INET6) + if (((struct sockaddr *)&tconn->my_addr)->sa_family == AF_INET6) src_in6.sin6_port = 0; else ((struct sockaddr_in *)&src_in6)->sin_port = 0; /* AF_INET & AF_SCI */ - peer_addr_len = min_t(int, nc->peer_addr_len, sizeof(src_in6)); - memcpy(&peer_in6, nc->peer_addr, peer_addr_len); - - rcu_read_unlock(); + peer_addr_len = min_t(int, tconn->peer_addr_len, sizeof(src_in6)); + memcpy(&peer_in6, &tconn->peer_addr, peer_addr_len); what = "sock_create_kern"; err = sock_create_kern(((struct sockaddr *)&src_in6)->sa_family, @@ -714,15 +712,14 @@ static struct socket *drbd_wait_for_connect(struct drbd_tconn *tconn) rcu_read_unlock(); return NULL; } - sndbuf_size = nc->sndbuf_size; rcvbuf_size = nc->rcvbuf_size; connect_int = nc->connect_int; - - my_addr_len = min_t(int, nc->my_addr_len, sizeof(struct sockaddr_in6)); - memcpy(&my_addr, nc->my_addr, my_addr_len); rcu_read_unlock(); + my_addr_len = min_t(int, tconn->my_addr_len, sizeof(struct sockaddr_in6)); + memcpy(&my_addr, &tconn->my_addr, my_addr_len); + what = "sock_create_kern"; err = sock_create_kern(((struct sockaddr *)&my_addr)->sa_family, SOCK_STREAM, IPPROTO_TCP, &s_listen); diff --git a/drivers/block/drbd/drbd_state.c b/drivers/block/drbd/drbd_state.c index cd55f46d5c55..d978e4d98a15 100644 --- a/drivers/block/drbd/drbd_state.c +++ b/drivers/block/drbd/drbd_state.c @@ -1418,6 +1418,8 @@ static int w_after_conn_state_ch(struct drbd_work *w, int unused) mutex_lock(&tconn->conf_update); old_conf = tconn->net_conf; + tconn->my_addr_len = 0; + tconn->peer_addr_len = 0; rcu_assign_pointer(tconn->net_conf, NULL); conn_free_crypto(tconn); mutex_unlock(&tconn->conf_update); diff --git a/include/linux/drbd_genl.h b/include/linux/drbd_genl.h index 0c2102c05384..b93db6c83882 100644 --- a/include/linux/drbd_genl.h +++ b/include/linux/drbd_genl.h @@ -97,6 +97,8 @@ GENL_struct(DRBD_NLA_CFG_REPLY, 1, drbd_cfg_reply, GENL_struct(DRBD_NLA_CFG_CONTEXT, 2, drbd_cfg_context, __u32_field(1, DRBD_GENLA_F_MANDATORY, ctx_volume) __str_field(2, DRBD_GENLA_F_MANDATORY, ctx_resource_name, 128) + __bin_field(3, DRBD_GENLA_F_MANDATORY, ctx_my_addr, 128) + __bin_field(4, DRBD_GENLA_F_MANDATORY, ctx_peer_addr, 128) ) GENL_struct(DRBD_NLA_DISK_CONF, 3, disk_conf, @@ -134,38 +136,36 @@ GENL_struct(DRBD_NLA_RESOURCE_OPTS, 4, res_opts, ) GENL_struct(DRBD_NLA_NET_CONF, 5, net_conf, - __bin_field(1, DRBD_F_REQUIRED | DRBD_F_INVARIANT, my_addr, 128) - __bin_field(2, DRBD_F_REQUIRED | DRBD_F_INVARIANT, peer_addr, 128) - __str_field_def(3, DRBD_GENLA_F_MANDATORY | DRBD_F_SENSITIVE, + __str_field_def(1, DRBD_GENLA_F_MANDATORY | DRBD_F_SENSITIVE, shared_secret, SHARED_SECRET_MAX) - __str_field_def(4, DRBD_GENLA_F_MANDATORY, cram_hmac_alg, SHARED_SECRET_MAX) - __str_field_def(5, DRBD_GENLA_F_MANDATORY, integrity_alg, SHARED_SECRET_MAX) - __str_field_def(6, DRBD_GENLA_F_MANDATORY, verify_alg, SHARED_SECRET_MAX) - __str_field_def(7, DRBD_GENLA_F_MANDATORY, csums_alg, SHARED_SECRET_MAX) - __u32_field_def(8, DRBD_GENLA_F_MANDATORY, wire_protocol, DRBD_PROTOCOL_DEF) - __u32_field_def(9, DRBD_GENLA_F_MANDATORY, connect_int, DRBD_CONNECT_INT_DEF) - __u32_field_def(10, DRBD_GENLA_F_MANDATORY, timeout, DRBD_TIMEOUT_DEF) - __u32_field_def(11, DRBD_GENLA_F_MANDATORY, ping_int, DRBD_PING_INT_DEF) - __u32_field_def(12, DRBD_GENLA_F_MANDATORY, ping_timeo, DRBD_PING_TIMEO_DEF) - __u32_field_def(13, DRBD_GENLA_F_MANDATORY, sndbuf_size, DRBD_SNDBUF_SIZE_DEF) - __u32_field_def(14, DRBD_GENLA_F_MANDATORY, rcvbuf_size, DRBD_RCVBUF_SIZE_DEF) - __u32_field_def(15, DRBD_GENLA_F_MANDATORY, ko_count, DRBD_KO_COUNT_DEF) - __u32_field_def(16, DRBD_GENLA_F_MANDATORY, max_buffers, DRBD_MAX_BUFFERS_DEF) - __u32_field_def(17, DRBD_GENLA_F_MANDATORY, max_epoch_size, DRBD_MAX_EPOCH_SIZE_DEF) - __u32_field_def(18, DRBD_GENLA_F_MANDATORY, unplug_watermark, DRBD_UNPLUG_WATERMARK_DEF) - __u32_field_def(19, DRBD_GENLA_F_MANDATORY, after_sb_0p, DRBD_AFTER_SB_0P_DEF) - __u32_field_def(20, DRBD_GENLA_F_MANDATORY, after_sb_1p, DRBD_AFTER_SB_1P_DEF) - __u32_field_def(21, DRBD_GENLA_F_MANDATORY, after_sb_2p, DRBD_AFTER_SB_2P_DEF) - __u32_field_def(22, DRBD_GENLA_F_MANDATORY, rr_conflict, DRBD_RR_CONFLICT_DEF) - __u32_field_def(23, DRBD_GENLA_F_MANDATORY, on_congestion, DRBD_ON_CONGESTION_DEF) - __u32_field_def(24, DRBD_GENLA_F_MANDATORY, cong_fill, DRBD_CONG_FILL_DEF) - __u32_field_def(25, DRBD_GENLA_F_MANDATORY, cong_extents, DRBD_CONG_EXTENTS_DEF) - __flg_field_def(26, DRBD_GENLA_F_MANDATORY, two_primaries, DRBD_ALLOW_TWO_PRIMARIES_DEF) - __flg_field(27, DRBD_GENLA_F_MANDATORY | DRBD_F_INVARIANT, discard_my_data) - __flg_field_def(28, DRBD_GENLA_F_MANDATORY, tcp_cork, DRBD_TCP_CORK_DEF) - __flg_field_def(29, DRBD_GENLA_F_MANDATORY, always_asbp, DRBD_ALWAYS_ASBP_DEF) - __flg_field(30, DRBD_GENLA_F_MANDATORY | DRBD_F_INVARIANT, dry_run) - __flg_field_def(31, DRBD_GENLA_F_MANDATORY, use_rle, DRBD_USE_RLE_DEF) + __str_field_def(2, DRBD_GENLA_F_MANDATORY, cram_hmac_alg, SHARED_SECRET_MAX) + __str_field_def(3, DRBD_GENLA_F_MANDATORY, integrity_alg, SHARED_SECRET_MAX) + __str_field_def(4, DRBD_GENLA_F_MANDATORY, verify_alg, SHARED_SECRET_MAX) + __str_field_def(5, DRBD_GENLA_F_MANDATORY, csums_alg, SHARED_SECRET_MAX) + __u32_field_def(6, DRBD_GENLA_F_MANDATORY, wire_protocol, DRBD_PROTOCOL_DEF) + __u32_field_def(7, DRBD_GENLA_F_MANDATORY, connect_int, DRBD_CONNECT_INT_DEF) + __u32_field_def(8, DRBD_GENLA_F_MANDATORY, timeout, DRBD_TIMEOUT_DEF) + __u32_field_def(9, DRBD_GENLA_F_MANDATORY, ping_int, DRBD_PING_INT_DEF) + __u32_field_def(10, DRBD_GENLA_F_MANDATORY, ping_timeo, DRBD_PING_TIMEO_DEF) + __u32_field_def(11, DRBD_GENLA_F_MANDATORY, sndbuf_size, DRBD_SNDBUF_SIZE_DEF) + __u32_field_def(12, DRBD_GENLA_F_MANDATORY, rcvbuf_size, DRBD_RCVBUF_SIZE_DEF) + __u32_field_def(13, DRBD_GENLA_F_MANDATORY, ko_count, DRBD_KO_COUNT_DEF) + __u32_field_def(14, DRBD_GENLA_F_MANDATORY, max_buffers, DRBD_MAX_BUFFERS_DEF) + __u32_field_def(15, DRBD_GENLA_F_MANDATORY, max_epoch_size, DRBD_MAX_EPOCH_SIZE_DEF) + __u32_field_def(16, DRBD_GENLA_F_MANDATORY, unplug_watermark, DRBD_UNPLUG_WATERMARK_DEF) + __u32_field_def(17, DRBD_GENLA_F_MANDATORY, after_sb_0p, DRBD_AFTER_SB_0P_DEF) + __u32_field_def(18, DRBD_GENLA_F_MANDATORY, after_sb_1p, DRBD_AFTER_SB_1P_DEF) + __u32_field_def(19, DRBD_GENLA_F_MANDATORY, after_sb_2p, DRBD_AFTER_SB_2P_DEF) + __u32_field_def(20, DRBD_GENLA_F_MANDATORY, rr_conflict, DRBD_RR_CONFLICT_DEF) + __u32_field_def(21, DRBD_GENLA_F_MANDATORY, on_congestion, DRBD_ON_CONGESTION_DEF) + __u32_field_def(22, DRBD_GENLA_F_MANDATORY, cong_fill, DRBD_CONG_FILL_DEF) + __u32_field_def(23, DRBD_GENLA_F_MANDATORY, cong_extents, DRBD_CONG_EXTENTS_DEF) + __flg_field_def(24, DRBD_GENLA_F_MANDATORY, two_primaries, DRBD_ALLOW_TWO_PRIMARIES_DEF) + __flg_field(25, DRBD_GENLA_F_MANDATORY | DRBD_F_INVARIANT, discard_my_data) + __flg_field_def(26, DRBD_GENLA_F_MANDATORY, tcp_cork, DRBD_TCP_CORK_DEF) + __flg_field_def(27, DRBD_GENLA_F_MANDATORY, always_asbp, DRBD_ALWAYS_ASBP_DEF) + __flg_field(28, DRBD_GENLA_F_MANDATORY | DRBD_F_INVARIANT, dry_run) + __flg_field_def(29, DRBD_GENLA_F_MANDATORY, use_rle, DRBD_USE_RLE_DEF) ) GENL_struct(DRBD_NLA_SET_ROLE_PARMS, 6, set_role_parms, -- 2.20.1