diff options
Diffstat (limited to 'net/ipv6/mcast.c')
| -rw-r--r-- | net/ipv6/mcast.c | 37 |
1 files changed, 19 insertions, 18 deletions
diff --git a/net/ipv6/mcast.c b/net/ipv6/mcast.c index fc6d7d143f2c..9b9d2ff01b35 100644 --- a/net/ipv6/mcast.c +++ b/net/ipv6/mcast.c @@ -65,10 +65,10 @@ #include <net/ip6_checksum.h> /* Ensure that we have struct in6_addr aligned on 32bit word. */ -static void *__mld2_query_bugs[] __attribute__((__unused__)) = { - BUILD_BUG_ON_NULL(offsetof(struct mld2_query, mld2q_srcs) % 4), - BUILD_BUG_ON_NULL(offsetof(struct mld2_report, mld2r_grec) % 4), - BUILD_BUG_ON_NULL(offsetof(struct mld2_grec, grec_mca) % 4) +static int __mld2_query_bugs[] __attribute__((__unused__)) = { + BUILD_BUG_ON_ZERO(offsetof(struct mld2_query, mld2q_srcs) % 4), + BUILD_BUG_ON_ZERO(offsetof(struct mld2_report, mld2r_grec) % 4), + BUILD_BUG_ON_ZERO(offsetof(struct mld2_grec, grec_mca) % 4) }; static struct in6_addr mld2_all_mcr = MLD2_ALL_MCR_INIT; @@ -1655,8 +1655,6 @@ static void mld_sendpack(struct sk_buff *skb) if (err) goto err_out; - payload_len = skb->len; - err = NF_HOOK(NFPROTO_IPV6, NF_INET_LOCAL_OUT, net, net->ipv6.igmp_sk, skb, NULL, skb->dev, dst_output); @@ -1682,16 +1680,16 @@ static int grec_size(struct ifmcaddr6 *pmc, int type, int gdel, int sdel) } static struct sk_buff *add_grhead(struct sk_buff *skb, struct ifmcaddr6 *pmc, - int type, struct mld2_grec **ppgr) + int type, struct mld2_grec **ppgr, unsigned int mtu) { - struct net_device *dev = pmc->idev->dev; struct mld2_report *pmr; struct mld2_grec *pgr; - if (!skb) - skb = mld_newpack(pmc->idev, dev->mtu); - if (!skb) - return NULL; + if (!skb) { + skb = mld_newpack(pmc->idev, mtu); + if (!skb) + return NULL; + } pgr = skb_put(skb, sizeof(struct mld2_grec)); pgr->grec_type = type; pgr->grec_auxwords = 0; @@ -1714,10 +1712,15 @@ static struct sk_buff *add_grec(struct sk_buff *skb, struct ifmcaddr6 *pmc, struct mld2_grec *pgr = NULL; struct ip6_sf_list *psf, *psf_next, *psf_prev, **psf_list; int scount, stotal, first, isquery, truncate; + unsigned int mtu; if (pmc->mca_flags & MAF_NOREPORT) return skb; + mtu = READ_ONCE(dev->mtu); + if (mtu < IPV6_MIN_MTU) + return skb; + isquery = type == MLD2_MODE_IS_INCLUDE || type == MLD2_MODE_IS_EXCLUDE; truncate = type == MLD2_MODE_IS_EXCLUDE || @@ -1738,7 +1741,7 @@ static struct sk_buff *add_grec(struct sk_buff *skb, struct ifmcaddr6 *pmc, AVAILABLE(skb) < grec_size(pmc, type, gdeleted, sdeleted)) { if (skb) mld_sendpack(skb); - skb = mld_newpack(idev, dev->mtu); + skb = mld_newpack(idev, mtu); } } first = 1; @@ -1774,12 +1777,12 @@ static struct sk_buff *add_grec(struct sk_buff *skb, struct ifmcaddr6 *pmc, pgr->grec_nsrcs = htons(scount); if (skb) mld_sendpack(skb); - skb = mld_newpack(idev, dev->mtu); + skb = mld_newpack(idev, mtu); first = 1; scount = 0; } if (first) { - skb = add_grhead(skb, pmc, type, &pgr); + skb = add_grhead(skb, pmc, type, &pgr, mtu); first = 0; } if (!skb) @@ -1814,7 +1817,7 @@ empty_source: mld_sendpack(skb); skb = NULL; /* add_grhead will get a new one */ } - skb = add_grhead(skb, pmc, type, &pgr); + skb = add_grhead(skb, pmc, type, &pgr, mtu); } } if (pgr) @@ -2753,7 +2756,6 @@ static int igmp6_mc_seq_open(struct inode *inode, struct file *file) } static const struct file_operations igmp6_mc_seq_fops = { - .owner = THIS_MODULE, .open = igmp6_mc_seq_open, .read = seq_read, .llseek = seq_lseek, @@ -2908,7 +2910,6 @@ static int igmp6_mcf_seq_open(struct inode *inode, struct file *file) } static const struct file_operations igmp6_mcf_seq_fops = { - .owner = THIS_MODULE, .open = igmp6_mcf_seq_open, .read = seq_read, .llseek = seq_lseek, |