From cd1f7d347c9e51f348119811bd41b74346ec57b8 Mon Sep 17 00:00:00 2001 From: Gerrit Renker Date: Thu, 4 Oct 2007 14:41:00 -0700 Subject: [PATCH] [CCID2]: Simplify interface This patch simplifies the interface of ccid2_hc_tx_alloc_seq(): * ccid2_hc_tx_alloc_seq() is always called with an argument of CCID2_SEQBUF_LEN; * other code - ccid2_hc_tx_check_sanity() - even depends on the assumption that ccid2_hc_tx_alloc_seq() has been called with this particular size; * passing the `gfp_t' argument to ccid2_hc_tx_alloc_seq() is redundant with gfp_any(). Signed-off-by: Gerrit Renker Signed-off-by: Arnaldo Carvalho de Melo Signed-off-by: David S. Miller --- net/dccp/ccids/ccid2.c | 19 +++++++++---------- 1 file changed, 9 insertions(+), 10 deletions(-) diff --git a/net/dccp/ccids/ccid2.c b/net/dccp/ccids/ccid2.c index c199f34c1940..5c6b4f97a664 100644 --- a/net/dccp/ccids/ccid2.c +++ b/net/dccp/ccids/ccid2.c @@ -83,8 +83,7 @@ static void ccid2_hc_tx_check_sanity(const struct ccid2_hc_tx_sock *hctx) #define ccid2_hc_tx_check_sanity(hctx) #endif -static int ccid2_hc_tx_alloc_seq(struct ccid2_hc_tx_sock *hctx, int num, - gfp_t gfp) +static int ccid2_hc_tx_alloc_seq(struct ccid2_hc_tx_sock *hctx) { struct ccid2_seq *seqp; int i; @@ -95,16 +94,16 @@ static int ccid2_hc_tx_alloc_seq(struct ccid2_hc_tx_sock *hctx, int num, return -ENOMEM; /* allocate buffer and initialize linked list */ - seqp = kmalloc(sizeof(*seqp) * num, gfp); + seqp = kmalloc(CCID2_SEQBUF_LEN * sizeof(struct ccid2_seq), gfp_any()); if (seqp == NULL) return -ENOMEM; - for (i = 0; i < (num - 1); i++) { + for (i = 0; i < (CCID2_SEQBUF_LEN - 1); i++) { seqp[i].ccid2s_next = &seqp[i + 1]; seqp[i + 1].ccid2s_prev = &seqp[i]; } - seqp[num - 1].ccid2s_next = seqp; - seqp->ccid2s_prev = &seqp[num - 1]; + seqp[CCID2_SEQBUF_LEN - 1].ccid2s_next = seqp; + seqp->ccid2s_prev = &seqp[CCID2_SEQBUF_LEN - 1]; /* This is the first allocation. Initiate the head and tail. */ if (hctx->ccid2hctx_seqbufc == 0) @@ -114,8 +113,8 @@ static int ccid2_hc_tx_alloc_seq(struct ccid2_hc_tx_sock *hctx, int num, hctx->ccid2hctx_seqh->ccid2s_next = seqp; seqp->ccid2s_prev = hctx->ccid2hctx_seqh; - hctx->ccid2hctx_seqt->ccid2s_prev = &seqp[num - 1]; - seqp[num - 1].ccid2s_next = hctx->ccid2hctx_seqt; + hctx->ccid2hctx_seqt->ccid2s_prev = &seqp[CCID2_SEQBUF_LEN - 1]; + seqp[CCID2_SEQBUF_LEN - 1].ccid2s_next = hctx->ccid2hctx_seqt; } /* store the original pointer to the buffer so we can free it */ @@ -298,7 +297,7 @@ static void ccid2_hc_tx_packet_sent(struct sock *sk, int more, unsigned int len) int rc; ccid2_pr_debug("allocating more space in history\n"); - rc = ccid2_hc_tx_alloc_seq(hctx, CCID2_SEQBUF_LEN, gfp_any()); + rc = ccid2_hc_tx_alloc_seq(hctx); BUG_ON(rc); /* XXX what do we do? */ next = hctx->ccid2hctx_seqh->ccid2s_next; @@ -771,7 +770,7 @@ static int ccid2_hc_tx_init(struct ccid *ccid, struct sock *sk) hctx->ccid2hctx_seqbufc = 0; /* XXX init ~ to window size... */ - if (ccid2_hc_tx_alloc_seq(hctx, CCID2_SEQBUF_LEN, GFP_ATOMIC) != 0) + if (ccid2_hc_tx_alloc_seq(hctx)) return -ENOMEM; hctx->ccid2hctx_sent = 0; -- 2.20.1