diff options
| author | Eric Dumazet <dada1@cosmosbay.com> | 2008-03-05 18:30:47 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-03-05 18:30:47 -0800 |
| commit | ee6b967301b4aa5d4a4b61e2f682f086266db9fb (patch) | |
| tree | 197c2430f87733dc80d00d1971f1be2a0e562358 /net/dccp/ipv4.c | |
| parent | a05c44f6d5fb6cd29da04f96bf5ffaa05f545ac5 (diff) | |
| download | lwn-ee6b967301b4aa5d4a4b61e2f682f086266db9fb.tar.gz lwn-ee6b967301b4aa5d4a4b61e2f682f086266db9fb.zip | |
[IPV4]: Add 'rtable' field in struct sk_buff to alias 'dst' and avoid casts
(Anonymous) unions can help us to avoid ugly casts.
A common cast it the (struct rtable *)skb->dst one.
Defining an union like :
union {
struct dst_entry *dst;
struct rtable *rtable;
};
permits to use skb->rtable in place.
Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/dccp/ipv4.c')
| -rw-r--r-- | net/dccp/ipv4.c | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/net/dccp/ipv4.c b/net/dccp/ipv4.c index 514a40b7fc7f..17ad69e90e48 100644 --- a/net/dccp/ipv4.c +++ b/net/dccp/ipv4.c @@ -450,7 +450,7 @@ static struct dst_entry* dccp_v4_route_skb(struct sock *sk, struct sk_buff *skb) { struct rtable *rt; - struct flowi fl = { .oif = ((struct rtable *)skb->dst)->rt_iif, + struct flowi fl = { .oif = skb->rtable->rt_iif, .nl_u = { .ip4_u = { .daddr = ip_hdr(skb)->saddr, .saddr = ip_hdr(skb)->daddr, @@ -511,7 +511,7 @@ static void dccp_v4_ctl_send_reset(struct sock *sk, struct sk_buff *rxskb) if (dccp_hdr(rxskb)->dccph_type == DCCP_PKT_RESET) return; - if (((struct rtable *)rxskb->dst)->rt_type != RTN_LOCAL) + if (rxskb->rtable->rt_type != RTN_LOCAL) return; dst = dccp_v4_route_skb(dccp_v4_ctl_socket->sk, rxskb); @@ -563,8 +563,7 @@ int dccp_v4_conn_request(struct sock *sk, struct sk_buff *skb) struct dccp_skb_cb *dcb = DCCP_SKB_CB(skb); /* Never answer to DCCP_PKT_REQUESTs send to broadcast or multicast */ - if (((struct rtable *)skb->dst)->rt_flags & - (RTCF_BROADCAST | RTCF_MULTICAST)) + if (skb->rtable->rt_flags & (RTCF_BROADCAST | RTCF_MULTICAST)) return 0; /* discard, don't send a reset here */ if (dccp_bad_service_code(sk, service)) { |