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| author |   Eric Dumazet <eric.dumazet@gmail.com> | 2010-10-01 16:14:55 +0000 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2010-10-03 21:50:52 -0700 |
| commit | 55747a0a73ea74a25fcebb0731e8d3f13fe8c09d (patch) | |
| tree | ad041d4c50fab573499e49b48f73e9a198bd7164 /net/ipv4/ipmr.c | |
| parent | gre: protocol table can be static (diff) | |
| download | linux-dev-55747a0a73ea74a25fcebb0731e8d3f13fe8c09d.tar.xz linux-dev-55747a0a73ea74a25fcebb0731e8d3f13fe8c09d.zip | |
ipmr: __pim_rcv() is called under rcu_read_lock
No need to get a reference on reg_dev and release it, we are in a
rcu_read_lock() protected section.
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/ipmr.c')
| -rw-r--r-- | net/ipv4/ipmr.c | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c index 10b24c02deb0..1a92ebd85196 100644 --- a/net/ipv4/ipmr.c +++ b/net/ipv4/ipmr.c @@ -1805,6 +1805,7 @@ dont_forward: } #ifdef CONFIG_IP_PIMSM +/* called with rcu_read_lock() */ static int __pim_rcv(struct mr_table *mrt, struct sk_buff *skb, unsigned int pimlen) { @@ -1826,26 +1827,23 @@ static int __pim_rcv(struct mr_table *mrt, struct sk_buff *skb, read_lock(&mrt_lock); if (mrt->mroute_reg_vif_num >= 0) reg_dev = mrt->vif_table[mrt->mroute_reg_vif_num].dev; - if (reg_dev) - dev_hold(reg_dev); read_unlock(&mrt_lock); if (reg_dev == NULL) return 1; skb->mac_header = skb->network_header; - skb_pull(skb, (u8*)encap - skb->data); + skb_pull(skb, (u8 *)encap - skb->data); skb_reset_network_header(skb); skb->protocol = htons(ETH_P_IP); - skb->ip_summed = 0; + skb->ip_summed = CHECKSUM_NONE; skb->pkt_type = PACKET_HOST; skb_tunnel_rx(skb, reg_dev); netif_rx(skb); - dev_put(reg_dev); - return 0; + return NET_RX_SUCCESS; } #endif |