diff options
Diffstat (limited to 'target/linux/generic/patches-4.0/630-packet_socket_type.patch')
| -rw-r--r-- | target/linux/generic/patches-4.0/630-packet_socket_type.patch | 134 |
1 files changed, 0 insertions, 134 deletions
diff --git a/target/linux/generic/patches-4.0/630-packet_socket_type.patch b/target/linux/generic/patches-4.0/630-packet_socket_type.patch deleted file mode 100644 index 3a39f2a7e3..0000000000 --- a/target/linux/generic/patches-4.0/630-packet_socket_type.patch +++ /dev/null @@ -1,134 +0,0 @@ -This patch allows the user to specify desired packet types (outgoing, -broadcast, unicast, etc.) on packet sockets via setsockopt. -This can reduce the load in situations where only a limited number -of packet types are necessary - -Signed-off-by: Felix Fietkau <nbd@openwrt.org> - ---- a/include/uapi/linux/if_packet.h -+++ b/include/uapi/linux/if_packet.h -@@ -31,6 +31,8 @@ struct sockaddr_ll { - #define PACKET_KERNEL 7 /* To kernel space */ - /* Unused, PACKET_FASTROUTE and PACKET_LOOPBACK are invisible to user space */ - #define PACKET_FASTROUTE 6 /* Fastrouted frame */ -+#define PACKET_MASK_ANY 0xffffffff /* mask for packet type bits */ -+ - - /* Packet socket options */ - -@@ -54,6 +56,7 @@ struct sockaddr_ll { - #define PACKET_FANOUT 18 - #define PACKET_TX_HAS_OFF 19 - #define PACKET_QDISC_BYPASS 20 -+#define PACKET_RECV_TYPE 21 - - #define PACKET_FANOUT_HASH 0 - #define PACKET_FANOUT_LB 1 ---- a/net/packet/af_packet.c -+++ b/net/packet/af_packet.c -@@ -1527,6 +1527,7 @@ static int packet_rcv_spkt(struct sk_buf - { - struct sock *sk; - struct sockaddr_pkt *spkt; -+ struct packet_sock *po; - - /* - * When we registered the protocol we saved the socket in the data -@@ -1534,6 +1535,7 @@ static int packet_rcv_spkt(struct sk_buf - */ - - sk = pt->af_packet_priv; -+ po = pkt_sk(sk); - - /* - * Yank back the headers [hope the device set this -@@ -1546,7 +1548,7 @@ static int packet_rcv_spkt(struct sk_buf - * so that this procedure is noop. - */ - -- if (skb->pkt_type == PACKET_LOOPBACK) -+ if (!(po->pkt_type & (1 << skb->pkt_type))) - goto out; - - if (!net_eq(dev_net(dev), sock_net(sk))) -@@ -1753,12 +1755,12 @@ static int packet_rcv(struct sk_buff *sk - int skb_len = skb->len; - unsigned int snaplen, res; - -- if (skb->pkt_type == PACKET_LOOPBACK) -- goto drop; -- - sk = pt->af_packet_priv; - po = pkt_sk(sk); - -+ if (!(po->pkt_type & (1 << skb->pkt_type))) -+ goto drop; -+ - if (!net_eq(dev_net(dev), sock_net(sk))) - goto drop; - -@@ -1878,12 +1880,12 @@ static int tpacket_rcv(struct sk_buff *s - BUILD_BUG_ON(TPACKET_ALIGN(sizeof(*h.h2)) != 32); - BUILD_BUG_ON(TPACKET_ALIGN(sizeof(*h.h3)) != 48); - -- if (skb->pkt_type == PACKET_LOOPBACK) -- goto drop; -- - sk = pt->af_packet_priv; - po = pkt_sk(sk); - -+ if (!(po->pkt_type & (1 << skb->pkt_type))) -+ goto drop; -+ - if (!net_eq(dev_net(dev), sock_net(sk))) - goto drop; - -@@ -2839,6 +2841,7 @@ static int packet_create(struct net *net - spin_lock_init(&po->bind_lock); - mutex_init(&po->pg_vec_lock); - po->prot_hook.func = packet_rcv; -+ po->pkt_type = PACKET_MASK_ANY & ~(1 << PACKET_LOOPBACK); - - if (sock->type == SOCK_PACKET) - po->prot_hook.func = packet_rcv_spkt; -@@ -3428,6 +3431,16 @@ packet_setsockopt(struct socket *sock, i - po->xmit = val ? packet_direct_xmit : dev_queue_xmit; - return 0; - } -+ case PACKET_RECV_TYPE: -+ { -+ unsigned int val; -+ if (optlen != sizeof(val)) -+ return -EINVAL; -+ if (copy_from_user(&val, optval, sizeof(val))) -+ return -EFAULT; -+ po->pkt_type = val & ~BIT(PACKET_LOOPBACK); -+ return 0; -+ } - default: - return -ENOPROTOOPT; - } -@@ -3479,6 +3492,13 @@ static int packet_getsockopt(struct sock - case PACKET_VNET_HDR: - val = po->has_vnet_hdr; - break; -+ case PACKET_RECV_TYPE: -+ if (len > sizeof(unsigned int)) -+ len = sizeof(unsigned int); -+ val = po->pkt_type; -+ -+ data = &val; -+ break; - case PACKET_VERSION: - val = po->tp_version; - break; ---- a/net/packet/internal.h -+++ b/net/packet/internal.h -@@ -117,6 +117,7 @@ struct packet_sock { - struct net_device __rcu *cached_dev; - int (*xmit)(struct sk_buff *skb); - struct packet_type prot_hook ____cacheline_aligned_in_smp; -+ unsigned int pkt_type; - }; - - static struct packet_sock *pkt_sk(struct sock *sk) |