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authorArnaldo Carvalho de Melo <acme@mandriva.com>2006-01-04 01:46:34 -0200
committerArnaldo Carvalho de Melo <acme@mandriva.com>2006-01-04 01:46:34 -0200
commite4dfd449c80a41bb615b23d0fc198ba08360a1f8 (patch)
treecf5ca5bb82cc5e7ef01a368bf6b86029266bc146 /net/dccp/ackvec.c
parent[DCCP] ackvec: Fix spelling of "throw" (diff)
downloadlinux-dev-e4dfd449c80a41bb615b23d0fc198ba08360a1f8.tar.xz
linux-dev-e4dfd449c80a41bb615b23d0fc198ba08360a1f8.zip
[DCCP] ackvec: use u8 for the buf offsets
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
Diffstat (limited to 'net/dccp/ackvec.c')
-rw-r--r--net/dccp/ackvec.c27
1 files changed, 17 insertions, 10 deletions
diff --git a/net/dccp/ackvec.c b/net/dccp/ackvec.c
index a979f4e5041d..ce9cb77c5c29 100644
--- a/net/dccp/ackvec.c
+++ b/net/dccp/ackvec.c
@@ -55,8 +55,8 @@ int dccp_insert_option_ackvec(struct sock *sk, struct sk_buff *skb)
from = av->dccpav_buf + av->dccpav_buf_head;
/* Check if buf_head wraps */
- if (av->dccpav_buf_head + len > av->dccpav_vec_len) {
- const u32 tailsize = (av->dccpav_vec_len - av->dccpav_buf_head);
+ if ((int)av->dccpav_buf_head + len > av->dccpav_vec_len) {
+ const u32 tailsize = av->dccpav_vec_len - av->dccpav_buf_head;
memcpy(to, from, tailsize);
to += tailsize;
@@ -93,8 +93,14 @@ int dccp_insert_option_ackvec(struct sock *sk, struct sk_buff *skb)
struct dccp_ackvec *dccp_ackvec_alloc(const unsigned int len,
const gfp_t priority)
{
- struct dccp_ackvec *av = kmalloc(sizeof(*av) + len, priority);
+ struct dccp_ackvec *av;
+ BUG_ON(len == 0);
+
+ if (len > DCCP_MAX_ACKVEC_LEN)
+ return NULL;
+
+ av = kmalloc(sizeof(*av) + len, priority);
if (av != NULL) {
av->dccpav_buf_len = len;
av->dccpav_buf_head =
@@ -117,13 +123,13 @@ void dccp_ackvec_free(struct dccp_ackvec *av)
}
static inline u8 dccp_ackvec_state(const struct dccp_ackvec *av,
- const unsigned int index)
+ const u8 index)
{
return av->dccpav_buf[index] & DCCP_ACKVEC_STATE_MASK;
}
static inline u8 dccp_ackvec_len(const struct dccp_ackvec *av,
- const unsigned int index)
+ const u8 index)
{
return av->dccpav_buf[index] & DCCP_ACKVEC_LEN_MASK;
}
@@ -135,7 +141,7 @@ static inline u8 dccp_ackvec_len(const struct dccp_ackvec *av,
*/
static inline int dccp_ackvec_set_buf_head_state(struct dccp_ackvec *av,
const unsigned int packets,
- const unsigned char state)
+ const unsigned char state)
{
unsigned int gap;
signed long new_head;
@@ -223,7 +229,7 @@ int dccp_ackvec_add(struct dccp_ackvec *av, const struct sock *sk,
* could reduce the complexity of this scan.)
*/
u64 delta = dccp_delta_seqno(ackno, av->dccpav_buf_ackno);
- unsigned int index = av->dccpav_buf_head;
+ u8 index = av->dccpav_buf_head;
while (1) {
const u8 len = dccp_ackvec_len(av, index);
@@ -301,9 +307,10 @@ static void dccp_ackvec_throw_away_ack_record(struct dccp_ackvec *av)
* draft-ietf-dccp-spec-11.txt Appendix A. -acme
*/
#if 0
- av->dccpav_buf_tail = av->dccpav_ack_ptr + 1;
- if (av->dccpav_buf_tail >= av->dccpav_vec_len)
- av->dccpav_buf_tail -= av->dccpav_vec_len;
+ u32 new_buf_tail = av->dccpav_ack_ptr + 1;
+ if (new_buf_tail >= av->dccpav_vec_len)
+ new_buf_tail -= av->dccpav_vec_len;
+ av->dccpav_buf_tail = new_buf_tail;
#endif
av->dccpav_vec_len -= av->dccpav_sent_len;
}