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author | John Crispin <john@phrozen.org> | 2016-12-25 20:11:34 +0100 |
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committer | John Crispin <john@phrozen.org> | 2017-08-05 08:46:36 +0200 |
commit | 74d00a8c3849c1340efd713eb94b786e304c201f (patch) | |
tree | de481743de61c34da96ab5f9dba3af3edcfb8260 /target/linux/generic/pending-4.9/630-packet_socket_type.patch | |
parent | de350550ef648d9728351b986b0516fa29465c45 (diff) | |
download | upstream-74d00a8c3849c1340efd713eb94b786e304c201f.tar.gz upstream-74d00a8c3849c1340efd713eb94b786e304c201f.tar.bz2 upstream-74d00a8c3849c1340efd713eb94b786e304c201f.zip |
kernel: split patches folder up into backport, pending and hack folders
* properly format/comment all patches
* merge debloat patches
* merge Kconfig patches
* merge swconfig patches
* merge hotplug patches
* drop 200-fix_localversion.patch - upstream
* drop 222-arm_zimage_none.patch - unused
* drop 252-mv_cesa_depends.patch - no longer required
* drop 410-mtd-move-forward-declaration-of-struct-mtd_info.patch - unused
* drop 661-fq_codel_keep_dropped_stats.patch - outdated
* drop 702-phy_add_aneg_done_function.patch - upstream
* drop 840-rtc7301.patch - unused
* drop 841-rtc_pt7c4338.patch - upstream
* drop 921-use_preinit_as_init.patch - unused
* drop spio-gpio-old and gpio-mmc - unused
Signed-off-by: John Crispin <john@phrozen.org>
Diffstat (limited to 'target/linux/generic/pending-4.9/630-packet_socket_type.patch')
-rw-r--r-- | target/linux/generic/pending-4.9/630-packet_socket_type.patch | 147 |
1 files changed, 147 insertions, 0 deletions
diff --git a/target/linux/generic/pending-4.9/630-packet_socket_type.patch b/target/linux/generic/pending-4.9/630-packet_socket_type.patch new file mode 100644 index 0000000000..5afee1e3cf --- /dev/null +++ b/target/linux/generic/pending-4.9/630-packet_socket_type.patch @@ -0,0 +1,147 @@ +From: Felix Fietkau <nbd@nbd.name> +Subject: net: add an optimization for dealing with raw sockets + +lede-commit: 4898039703d7315f0f3431c860123338ec3be0f6 +Signed-off-by: Felix Fietkau <nbd@nbd.name> +--- + include/uapi/linux/if_packet.h | 3 +++ + net/packet/af_packet.c | 34 +++++++++++++++++++++++++++------- + net/packet/internal.h | 1 + + 3 files changed, 31 insertions(+), 7 deletions(-) + +diff --git a/include/uapi/linux/if_packet.h b/include/uapi/linux/if_packet.h +index 9e7edfd8141e..40fdf8907900 100644 +--- 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 */ + +@@ -56,6 +58,7 @@ struct sockaddr_ll { + #define PACKET_QDISC_BYPASS 20 + #define PACKET_ROLLOVER_STATS 21 + #define PACKET_FANOUT_DATA 22 ++#define PACKET_RECV_TYPE 23 + + #define PACKET_FANOUT_HASH 0 + #define PACKET_FANOUT_LB 1 +diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c +index 6a563e6e24de..e412c5a4f6d4 100644 +--- a/net/packet/af_packet.c ++++ b/net/packet/af_packet.c +@@ -1772,6 +1772,7 @@ static int packet_rcv_spkt(struct sk_buff *skb, struct net_device *dev, + { + struct sock *sk; + struct sockaddr_pkt *spkt; ++ struct packet_sock *po; + + /* + * When we registered the protocol we saved the socket in the data +@@ -1779,6 +1780,7 @@ static int packet_rcv_spkt(struct sk_buff *skb, struct net_device *dev, + */ + + sk = pt->af_packet_priv; ++ po = pkt_sk(sk); + + /* + * Yank back the headers [hope the device set this +@@ -1791,7 +1793,7 @@ static int packet_rcv_spkt(struct sk_buff *skb, struct net_device *dev, + * 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))) +@@ -2029,12 +2031,12 @@ static int packet_rcv(struct sk_buff *skb, struct net_device *dev, + unsigned int snaplen, res; + bool is_drop_n_account = false; + +- 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; + +@@ -2159,12 +2161,12 @@ static int tpacket_rcv(struct sk_buff *skb, struct net_device *dev, + 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; + +@@ -3234,6 +3236,7 @@ static int packet_create(struct net *net, struct socket *sock, int protocol, + mutex_init(&po->pg_vec_lock); + po->rollover = NULL; + 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; +@@ -3815,6 +3818,16 @@ packet_setsockopt(struct socket *sock, int level, int optname, char __user *optv + 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; + } +@@ -3867,6 +3880,13 @@ static int packet_getsockopt(struct socket *sock, int level, int optname, + 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; +diff --git a/net/packet/internal.h b/net/packet/internal.h +index 9ee46314b7d7..76c895fcf22f 100644 +--- a/net/packet/internal.h ++++ b/net/packet/internal.h +@@ -129,6 +129,7 @@ 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) +-- +2.11.0 + |