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authorArnaldo Carvalho de Melo <acme@mandriva.com>2006-03-20 19:21:44 -0800
committerDavid S. Miller <davem@davemloft.net>2006-03-20 19:21:44 -0800
commit91f0ebf7b6d5cb2b6e818d48587566144821babe (patch)
tree505c66f36bd72014d7eacb7a04ea011bae2e9a3a /net/dccp/ccids/ccid3.c
parentf38c39d6ce8226519455a6dfe91c2ad84f363f6f (diff)
[DCCP] CCID: Improve CCID infrastructure
1. No need for ->ccid_init nor ->ccid_exit, this is what module_{init,exit} does and anynways neither ccid2 nor ccid3 were using it. 2. Rename struct ccid to struct ccid_operations and introduce struct ccid with a pointer to ccid_operations and rigth after it the rx or tx private state. 3. Remove the pointer to the state of the half connections from struct dccp_sock, now its derived thru ccid_priv() from the ccid pointer. Now we also can implement the setsockopt for changing the CCID easily as no ccid init routines can affect struct dccp_sock in any way that prevents other CCIDs from working if a CCID switch operation is asked by apps. Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/dccp/ccids/ccid3.c')
-rw-r--r--net/dccp/ccids/ccid3.c34
1 files changed, 7 insertions, 27 deletions
diff --git a/net/dccp/ccids/ccid3.c b/net/dccp/ccids/ccid3.c
index f9e16db09be..0587f52e4af 100644
--- a/net/dccp/ccids/ccid3.c
+++ b/net/dccp/ccids/ccid3.c
@@ -647,17 +647,10 @@ static int ccid3_hc_tx_parse_options(struct sock *sk, unsigned char option,
return rc;
}
-static int ccid3_hc_tx_init(struct sock *sk)
+static int ccid3_hc_tx_init(struct ccid *ccid, struct sock *sk)
{
struct dccp_sock *dp = dccp_sk(sk);
- struct ccid3_hc_tx_sock *hctx;
-
- dp->dccps_hc_tx_ccid_private = kmalloc(sizeof(*hctx), gfp_any());
- if (dp->dccps_hc_tx_ccid_private == NULL)
- return -ENOMEM;
-
- hctx = ccid3_hc_tx_sk(sk);
- memset(hctx, 0, sizeof(*hctx));
+ struct ccid3_hc_tx_sock *hctx = ccid_priv(ccid);
if (dp->dccps_packet_size >= TFRC_MIN_PACKET_SIZE &&
dp->dccps_packet_size <= TFRC_MAX_PACKET_SIZE)
@@ -680,7 +673,6 @@ static int ccid3_hc_tx_init(struct sock *sk)
static void ccid3_hc_tx_exit(struct sock *sk)
{
- struct dccp_sock *dp = dccp_sk(sk);
struct ccid3_hc_tx_sock *hctx = ccid3_hc_tx_sk(sk);
BUG_ON(hctx == NULL);
@@ -690,9 +682,6 @@ static void ccid3_hc_tx_exit(struct sock *sk)
/* Empty packet history */
dccp_tx_hist_purge(ccid3_tx_hist, &hctx->ccid3hctx_hist);
-
- kfree(dp->dccps_hc_tx_ccid_private);
- dp->dccps_hc_tx_ccid_private = NULL;
}
/*
@@ -1039,20 +1028,13 @@ static void ccid3_hc_rx_packet_recv(struct sock *sk, struct sk_buff *skb)
}
}
-static int ccid3_hc_rx_init(struct sock *sk)
+static int ccid3_hc_rx_init(struct ccid *ccid, struct sock *sk)
{
struct dccp_sock *dp = dccp_sk(sk);
- struct ccid3_hc_rx_sock *hcrx;
+ struct ccid3_hc_rx_sock *hcrx = ccid_priv(ccid);
ccid3_pr_debug("%s, sk=%p\n", dccp_role(sk), sk);
- dp->dccps_hc_rx_ccid_private = kmalloc(sizeof(*hcrx), gfp_any());
- if (dp->dccps_hc_rx_ccid_private == NULL)
- return -ENOMEM;
-
- hcrx = ccid3_hc_rx_sk(sk);
- memset(hcrx, 0, sizeof(*hcrx));
-
if (dp->dccps_packet_size >= TFRC_MIN_PACKET_SIZE &&
dp->dccps_packet_size <= TFRC_MAX_PACKET_SIZE)
hcrx->ccid3hcrx_s = dp->dccps_packet_size;
@@ -1071,7 +1053,6 @@ static int ccid3_hc_rx_init(struct sock *sk)
static void ccid3_hc_rx_exit(struct sock *sk)
{
struct ccid3_hc_rx_sock *hcrx = ccid3_hc_rx_sk(sk);
- struct dccp_sock *dp = dccp_sk(sk);
BUG_ON(hcrx == NULL);
@@ -1082,9 +1063,6 @@ static void ccid3_hc_rx_exit(struct sock *sk)
/* Empty loss interval history */
dccp_li_hist_purge(ccid3_li_hist, &hcrx->ccid3hcrx_li_hist);
-
- kfree(dp->dccps_hc_rx_ccid_private);
- dp->dccps_hc_rx_ccid_private = NULL;
}
static void ccid3_hc_rx_get_info(struct sock *sk, struct tcp_info *info)
@@ -1170,10 +1148,11 @@ static int ccid3_hc_tx_getsockopt(struct sock *sk, const int optname, int len,
return 0;
}
-static struct ccid ccid3 = {
+static struct ccid_operations ccid3 = {
.ccid_id = 3,
.ccid_name = "ccid3",
.ccid_owner = THIS_MODULE,
+ .ccid_hc_tx_obj_size = sizeof(struct ccid3_hc_tx_sock),
.ccid_hc_tx_init = ccid3_hc_tx_init,
.ccid_hc_tx_exit = ccid3_hc_tx_exit,
.ccid_hc_tx_send_packet = ccid3_hc_tx_send_packet,
@@ -1181,6 +1160,7 @@ static struct ccid ccid3 = {
.ccid_hc_tx_packet_recv = ccid3_hc_tx_packet_recv,
.ccid_hc_tx_insert_options = ccid3_hc_tx_insert_options,
.ccid_hc_tx_parse_options = ccid3_hc_tx_parse_options,
+ .ccid_hc_rx_obj_size = sizeof(struct ccid3_hc_rx_sock),
.ccid_hc_rx_init = ccid3_hc_rx_init,
.ccid_hc_rx_exit = ccid3_hc_rx_exit,
.ccid_hc_rx_insert_options = ccid3_hc_rx_insert_options,