#include #include #include #include #include #include #include #include #include #include #include #include #include #include #include static void fou6_build_udp(struct sk_buff *skb, struct ip_tunnel_encap *e, struct flowi6 *fl6, u8 *protocol, __be16 sport) { struct udphdr *uh; skb_push(skb, sizeof(struct udphdr)); skb_reset_transport_header(skb); uh = udp_hdr(skb); uh->dest = e->dport; uh->source = sport; uh->len = htons(skb->len); udp6_set_csum(!(e->flags & TUNNEL_ENCAP_FLAG_CSUM6), skb, &fl6->saddr, &fl6->daddr, skb->len); *protocol = IPPROTO_UDP; } int fou6_build_header(struct sk_buff *skb, struct ip_tunnel_encap *e, u8 *protocol, struct flowi6 *fl6) { __be16 sport; int err; int type = e->flags & TUNNEL_ENCAP_FLAG_CSUM6 ? SKB_GSO_UDP_TUNNEL_CSUM : SKB_GSO_UDP_TUNNEL; err = __fou_build_header(skb, e, protocol, &sport, type); if (err) return err; fou6_build_udp(skb, e, fl6, protocol, sport); return 0; } EXPORT_SYMBOL(fou6_build_header); int gue6_build_header(struct sk_buff *skb, struct ip_tunnel_encap *e, u8 *protocol, struct flowi6 *fl6) { __be16 sport; int err; int type = e->flags & TUNNEL_ENCAP_FLAG_CSUM6 ? SKB_GSO_UDP_TUNNEL_CSUM : SKB_GSO_UDP_TUNNEL; err = __gue_build_header(skb, e, protocol, &sport, type); if (err) return err; fou6_build_udp(skb, e, fl6, protocol, sport); return 0; } EXPORT_SYMBOL(gue6_build_header); #if IS_ENABLED(CONFIG_IPV6_FOU_TUNNEL) static const struct ip6_tnl_encap_ops fou_ip6tun_ops = { .encap_hlen = fou_encap_hlen, .build_header = fou6_build_header, }; static const struct ip6_tnl_encap_ops gue_ip6tun_ops = { .encap_hlen = gue_encap_hlen, .build_header = gue6_build_header, }; static int ip6_tnl_encap_add_fou_ops(void) { int ret; ret = ip6_tnl_encap_add_ops(&fou_ip6tun_ops, TUNNEL_ENCAP_FOU); if (ret < 0) { pr_err("can't add fou6 ops\n"); return ret; } ret = ip6_tnl_encap_add_ops(&gue_ip6tun_ops, TUNNEL_ENCAP_GUE); if (ret < 0) { pr_err("can't add gue6 ops\n"); ip6_tnl_encap_del_ops(&fou_ip6tun_ops, TUNNEL_ENCAP_FOU); return ret; } return 0; } static void ip6_tnl_encap_del_fou_ops(void) { ip6_tnl_encap_del_ops(&fou_ip6tun_ops, TUNNEL_ENCAP_FOU); ip6_tnl_encap_del_ops(&gue_ip6tun_ops, TUNNEL_ENCAP_GUE); } #else static int ip6_tnl_encap_add_fou_ops(void) { return 0; } static void ip6_tnl_encap_del_fou_ops(void) { } #endif static int __init fou6_init(void) { int ret; ret = ip6_tnl_encap_add_fou_ops(); return ret; } static void __exit fou6_fini(void) { ip6_tnl_encap_del_fou_ops(); } module_init(fou6_init); module_exit(fou6_fini); MODULE_AUTHOR("Tom Herbert "); MODULE_LICENSE("GPL"); mmit/sound/pci?id=dfef358bd1beb4e7b5c94eca944be9cd23dfc752'>pci/echoaudio
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authorChristoph Hellwig <hch@lst.de>2017-01-30 13:15:41 +0100
committerBjorn Helgaas <bhelgaas@google.com>2017-02-02 10:35:46 -0600
commitdfef358bd1beb4e7b5c94eca944be9cd23dfc752 (patch)
treeb9a2afb38a4c2ac8ad31f49ec0d71fe9e5b1994c /sound/pci/echoaudio
parent030305d69fc6963c16003f50d7e8d74b02d0a143 (diff)
PCI/MSI: Don't apply affinity if there aren't enough vectors left
Bart reported a problem wіth an out of bounds access in the low-level IRQ affinity code, which we root caused to the qla2xxx driver assigning all its MSI-X vectors to the pre and post vectors, and not having any left for the actually spread IRQs. Fix this issue by not asking for affinity assignment when there are no vectors to assign left. Fixes: 402723ad5c62 ("PCI/MSI: Provide pci_alloc_irq_vectors_affinity()") Link: https://lkml.kernel.org/r/1485359225.3093.3.camel@sandisk.com Reported-by: Bart Van Assche <bart.vanassche@sandisk.com> Tested-by: Bart Van Assche <bart.vanassche@sandisk.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'sound/pci/echoaudio')