diff options
author | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-04-27 09:26:46 -0700 |
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committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-04-27 09:26:46 -0700 |
commit | 15c54033964a943de7b0763efd3bd0ede7326395 (patch) | |
tree | 840b292612d1b5396d5bab5bde537a9013db3ceb /net/packet/af_packet.c | |
parent | ad5da3cf39a5b11a198929be1f2644e17ecd767e (diff) | |
parent | 912a41a4ab935ce8c4308428ec13fc7f8b1f18f4 (diff) |
Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
* master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6: (448 commits)
[IPV4] nl_fib_lookup: Initialise res.r before fib_res_put(&res)
[IPV6]: Fix thinko in ipv6_rthdr_rcv() changes.
[IPV4]: Add multipath cached to feature-removal-schedule.txt
[WIRELESS] cfg80211: Clarify locking comment.
[WIRELESS] cfg80211: Fix locking in wiphy_new.
[WEXT] net_device: Don't include wext bits if not required.
[WEXT]: Misc code cleanups.
[WEXT]: Reduce inline abuse.
[WEXT]: Move EXPORT_SYMBOL statements where they belong.
[WEXT]: Cleanup early ioctl call path.
[WEXT]: Remove options.
[WEXT]: Remove dead debug code.
[WEXT]: Clean up how wext is called.
[WEXT]: Move to net/wireless
[AFS]: Eliminate cmpxchg() usage in vlocation code.
[RXRPC]: Fix pointers passed to bitops.
[RXRPC]: Remove bogus atomic_* overrides.
[AFS]: Fix u64 printing in debug logging.
[AFS]: Add "directory write" support.
[AFS]: Implement the CB.InitCallBackState3 operation.
...
Diffstat (limited to 'net/packet/af_packet.c')
-rw-r--r-- | net/packet/af_packet.c | 94 |
1 files changed, 62 insertions, 32 deletions
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c index 28d47e8f287..02e401cd683 100644 --- a/net/packet/af_packet.c +++ b/net/packet/af_packet.c @@ -114,22 +114,22 @@ On receive: ----------- Incoming, dev->hard_header!=NULL - mac.raw -> ll header - data -> data + mac_header -> ll header + data -> data Outgoing, dev->hard_header!=NULL - mac.raw -> ll header - data -> ll header + mac_header -> ll header + data -> ll header Incoming, dev->hard_header==NULL - mac.raw -> UNKNOWN position. It is very likely, that it points to ll header. - PPP makes it, that is wrong, because introduce assymetry - between rx and tx paths. - data -> data + mac_header -> UNKNOWN position. It is very likely, that it points to ll + header. PPP makes it, that is wrong, because introduce + assymetry between rx and tx paths. + data -> data Outgoing, dev->hard_header==NULL - mac.raw -> data. ll header is still not built! - data -> data + mac_header -> data. ll header is still not built! + data -> data Resume If dev->hard_header==NULL we are unlikely to restore sensible ll header. @@ -139,12 +139,12 @@ On transmit: ------------ dev->hard_header != NULL - mac.raw -> ll header - data -> ll header + mac_header -> ll header + data -> ll header dev->hard_header == NULL (ll header is added by device, we cannot control it) - mac.raw -> data - data -> data + mac_header -> data + data -> data We should set nh.raw on output to correct posistion, packet classifier depends on it. @@ -201,7 +201,8 @@ struct packet_sock { struct packet_type prot_hook; spinlock_t bind_lock; unsigned int running:1, /* prot_hook is attached*/ - auxdata:1; + auxdata:1, + origdev:1; int ifindex; /* bound device */ __be16 num; #ifdef CONFIG_PACKET_MULTICAST @@ -284,7 +285,7 @@ static int packet_rcv_spkt(struct sk_buff *skb, struct net_device *dev, struct * Incoming packets have ll header pulled, * push it back. * - * For outgoing ones skb->data == skb->mac.raw + * For outgoing ones skb->data == skb_mac_header(skb) * so that this procedure is noop. */ @@ -303,7 +304,7 @@ static int packet_rcv_spkt(struct sk_buff *skb, struct net_device *dev, struct spkt = &PACKET_SKB_CB(skb)->sa.pkt; - skb_push(skb, skb->data-skb->mac.raw); + skb_push(skb, skb->data - skb_mac_header(skb)); /* * The SOCK_PACKET socket receives _all_ frames. @@ -401,14 +402,14 @@ static int packet_sendmsg_spkt(struct kiocb *iocb, struct socket *sock, * notable one here. This should really be fixed at the driver level. */ skb_reserve(skb, LL_RESERVED_SPACE(dev)); - skb->nh.raw = skb->data; + skb_reset_network_header(skb); /* Try to align data part correctly */ if (dev->hard_header) { skb->data -= dev->hard_header_len; skb->tail -= dev->hard_header_len; if (len < dev->hard_header_len) - skb->nh.raw = skb->data; + skb_reset_network_header(skb); } /* Returns -EFAULT on error */ @@ -488,10 +489,10 @@ static int packet_rcv(struct sk_buff *skb, struct net_device *dev, struct packet never delivered to user. */ if (sk->sk_type != SOCK_DGRAM) - skb_push(skb, skb->data - skb->mac.raw); + skb_push(skb, skb->data - skb_mac_header(skb)); else if (skb->pkt_type == PACKET_OUTGOING) { /* Special case: outgoing packets have ll header at head */ - skb_pull(skb, skb->nh.raw - skb->data); + skb_pull(skb, skb_network_offset(skb)); } } @@ -528,7 +529,10 @@ static int packet_rcv(struct sk_buff *skb, struct net_device *dev, struct packet sll->sll_hatype = dev->type; sll->sll_protocol = skb->protocol; sll->sll_pkttype = skb->pkt_type; - sll->sll_ifindex = dev->ifindex; + if (unlikely(po->origdev) && skb->pkt_type == PACKET_HOST) + sll->sll_ifindex = orig_dev->ifindex; + else + sll->sll_ifindex = dev->ifindex; sll->sll_halen = 0; if (dev->hard_header_parse) @@ -582,6 +586,7 @@ static int tpacket_rcv(struct sk_buff *skb, struct net_device *dev, struct packe unsigned long status = TP_STATUS_LOSING|TP_STATUS_USER; unsigned short macoff, netoff; struct sk_buff *copy_skb = NULL; + struct timeval tv; if (skb->pkt_type == PACKET_LOOPBACK) goto drop; @@ -591,10 +596,10 @@ static int tpacket_rcv(struct sk_buff *skb, struct net_device *dev, struct packe if (dev->hard_header) { if (sk->sk_type != SOCK_DGRAM) - skb_push(skb, skb->data - skb->mac.raw); + skb_push(skb, skb->data - skb_mac_header(skb)); else if (skb->pkt_type == PACKET_OUTGOING) { /* Special case: outgoing packets have ll header at head */ - skb_pull(skb, skb->nh.raw - skb->data); + skb_pull(skb, skb_network_offset(skb)); } } @@ -612,7 +617,7 @@ static int tpacket_rcv(struct sk_buff *skb, struct net_device *dev, struct packe if (sk->sk_type == SOCK_DGRAM) { macoff = netoff = TPACKET_ALIGN(TPACKET_HDRLEN) + 16; } else { - unsigned maclen = skb->nh.raw - skb->data; + unsigned maclen = skb_network_offset(skb); netoff = TPACKET_ALIGN(TPACKET_HDRLEN + (maclen < 16 ? 16 : maclen)); macoff = netoff - maclen; } @@ -656,12 +661,13 @@ static int tpacket_rcv(struct sk_buff *skb, struct net_device *dev, struct packe h->tp_snaplen = snaplen; h->tp_mac = macoff; h->tp_net = netoff; - if (skb->tstamp.off_sec == 0) { + if (skb->tstamp.tv64 == 0) { __net_timestamp(skb); sock_enable_timestamp(sk); } - h->tp_sec = skb->tstamp.off_sec; - h->tp_usec = skb->tstamp.off_usec; + tv = ktime_to_timeval(skb->tstamp); + h->tp_sec = tv.tv_sec; + h->tp_usec = tv.tv_usec; sll = (struct sockaddr_ll*)((u8*)h + TPACKET_ALIGN(sizeof(*h))); sll->sll_halen = 0; @@ -671,7 +677,10 @@ static int tpacket_rcv(struct sk_buff *skb, struct net_device *dev, struct packe sll->sll_hatype = dev->type; sll->sll_protocol = skb->protocol; sll->sll_pkttype = skb->pkt_type; - sll->sll_ifindex = dev->ifindex; + if (unlikely(po->origdev) && skb->pkt_type == PACKET_HOST) + sll->sll_ifindex = orig_dev->ifindex; + else + sll->sll_ifindex = dev->ifindex; h->tp_status = status; smp_mb(); @@ -766,14 +775,14 @@ static int packet_sendmsg(struct kiocb *iocb, struct socket *sock, goto out_unlock; skb_reserve(skb, LL_RESERVED_SPACE(dev)); - skb->nh.raw = skb->data; + skb_reset_network_header(skb); if (dev->hard_header) { int res; err = -EINVAL; res = dev->hard_header(skb, dev, ntohs(proto), addr, NULL, len); if (sock->type != SOCK_DGRAM) { - skb->tail = skb->data; + skb_reset_tail_pointer(skb); skb->len = 0; } else if (res < 0) goto out_free; @@ -1143,7 +1152,7 @@ static int packet_recvmsg(struct kiocb *iocb, struct socket *sock, aux.tp_len = PACKET_SKB_CB(skb)->origlen; aux.tp_snaplen = skb->len; aux.tp_mac = 0; - aux.tp_net = skb->nh.raw - skb->data; + aux.tp_net = skb_network_offset(skb); put_cmsg(msg, SOL_PACKET, PACKET_AUXDATA, sizeof(aux), &aux); } @@ -1411,6 +1420,18 @@ packet_setsockopt(struct socket *sock, int level, int optname, char __user *optv po->auxdata = !!val; return 0; } + case PACKET_ORIGDEV: + { + int val; + + if (optlen < sizeof(val)) + return -EINVAL; + if (copy_from_user(&val, optval, sizeof(val))) + return -EFAULT; + + po->origdev = !!val; + return 0; + } default: return -ENOPROTOOPT; } @@ -1454,6 +1475,13 @@ static int packet_getsockopt(struct socket *sock, int level, int optname, data = &val; break; + case PACKET_ORIGDEV: + if (len > sizeof(int)) + len = sizeof(int); + val = po->origdev; + + data = &val; + break; default: return -ENOPROTOOPT; } @@ -1543,6 +1571,8 @@ static int packet_ioctl(struct socket *sock, unsigned int cmd, } case SIOCGSTAMP: return sock_get_timestamp(sk, (struct timeval __user *)arg); + case SIOCGSTAMPNS: + return sock_get_timestampns(sk, (struct timespec __user *)arg); #ifdef CONFIG_INET case SIOCADDRT: |