aboutsummaryrefslogtreecommitdiff
path: root/net/dccp/ccids
diff options
context:
space:
mode:
authorGerrit Renker <gerrit@erg.abdn.ac.uk>2007-10-04 14:41:00 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2007-10-10 16:54:33 -0700
commitcd1f7d347c9e51f348119811bd41b74346ec57b8 (patch)
tree1c444753fb2587fbeaeb2679facbeff03903f8b3 /net/dccp/ccids
parent126acd5bf769fcb80e38a5360ad12b842d6d29d4 (diff)
[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 <gerrit@erg.abdn.ac.uk> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/dccp/ccids')
-rw-r--r--net/dccp/ccids/ccid2.c19
1 files changed, 9 insertions, 10 deletions
diff --git a/net/dccp/ccids/ccid2.c b/net/dccp/ccids/ccid2.c
index c199f34c194..5c6b4f97a66 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;