diff options
Diffstat (limited to 'net/dccp')
| -rw-r--r-- | net/dccp/dccp.h | 1 | ||||
| -rw-r--r-- | net/dccp/options.c | 32 | ||||
| -rw-r--r-- | net/dccp/output.c | 2 |
3 files changed, 24 insertions, 11 deletions
diff --git a/net/dccp/dccp.h b/net/dccp/dccp.h index 3af3320..b138e20 100644 --- a/net/dccp/dccp.h +++ b/net/dccp/dccp.h @@ -428,6 +428,7 @@ static inline int dccp_ack_pending(const struct sock *sk) } extern int dccp_insert_options(struct sock *sk, struct sk_buff *skb); +extern int dccp_insert_options_rsk(struct dccp_request_sock*, struct sk_buff*); extern int dccp_insert_option_elapsed_time(struct sock *sk, struct sk_buff *skb, u32 elapsed_time); diff --git a/net/dccp/options.c b/net/dccp/options.c index 0c996d8..bedb5da 100644 --- a/net/dccp/options.c +++ b/net/dccp/options.c @@ -537,6 +537,18 @@ static int dccp_insert_options_feat(struct sock *sk, struct sk_buff *skb) return 0; } +/* The length of all options needs to be a multiple of 4 (5.8) */ +static void dccp_insert_option_padding(struct sk_buff *skb) +{ + int padding = DCCP_SKB_CB(skb)->dccpd_opt_len % 4; + + if (padding != 0) { + padding = 4 - padding; + memset(skb_push(skb, padding), 0, padding); + DCCP_SKB_CB(skb)->dccpd_opt_len += padding; + } +} + int dccp_insert_options(struct sock *sk, struct sk_buff *skb) { struct dccp_sock *dp = dccp_sk(sk); @@ -580,18 +592,18 @@ int dccp_insert_options(struct sock *sk, struct sk_buff *skb) dccp_insert_option_timestamp_echo(dp, NULL, skb)) return -1; - /* XXX: insert other options when appropriate */ + dccp_insert_option_padding(skb); + return 0; +} - if (DCCP_SKB_CB(skb)->dccpd_opt_len != 0) { - /* The length of all options has to be a multiple of 4 */ - int padding = DCCP_SKB_CB(skb)->dccpd_opt_len % 4; +int dccp_insert_options_rsk(struct dccp_request_sock *dreq, struct sk_buff *skb) +{ + DCCP_SKB_CB(skb)->dccpd_opt_len = 0; - if (padding != 0) { - padding = 4 - padding; - memset(skb_push(skb, padding), 0, padding); - DCCP_SKB_CB(skb)->dccpd_opt_len += padding; - } - } + if (dreq->dreq_timestamp_echo != 0 && + dccp_insert_option_timestamp_echo(NULL, dreq, skb)) + return -1; + dccp_insert_option_padding(skb); return 0; } diff --git a/net/dccp/output.c b/net/dccp/output.c index b2e1791..5589a5e 100644 --- a/net/dccp/output.c +++ b/net/dccp/output.c @@ -303,7 +303,7 @@ struct sk_buff *dccp_make_response(struct sock *sk, struct dst_entry *dst, DCCP_SKB_CB(skb)->dccpd_type = DCCP_PKT_RESPONSE; DCCP_SKB_CB(skb)->dccpd_seq = dreq->dreq_iss; - if (dccp_insert_options(sk, skb)) { + if (dccp_insert_options_rsk(dreq, skb)) { kfree_skb(skb); return NULL; } |
