* Statistics
*/
DEFINE_SNMP_STAT(struct icmp_mib, icmp_statistics) __read_mostly;
+DEFINE_SNMP_STAT(struct icmpmsg_mib, icmpmsg_statistics) __read_mostly;
/* An array of errno for error messages from dest unreach. */
/* RFC 1122: 3.2.2.1 States that NET_UNREACH, HOST_UNREACH and SR_FAILED MUST be considered 'transient errs'. */
*/
struct icmp_control {
- int output_entry; /* Field for increment on output */
- int input_entry; /* Field for increment on input */
void (*handler)(struct sk_buff *skb);
short error; /* This ICMP is classed as an error message */
};
/* No rate limit on loopback */
if (dst->dev && (dst->dev->flags&IFF_LOOPBACK))
- goto out;
+ goto out;
/* Limit if icmp type is enabled in ratemask. */
if ((1 << type) & sysctl_icmp_ratemask)
/*
* Maintain the counters used in the SNMP statistics for outgoing ICMP
*/
-static void icmp_out_count(int type)
+void icmp_out_count(unsigned char type)
{
- if (type <= NR_ICMP_TYPES) {
- ICMP_INC_STATS(icmp_pointers[type].output_entry);
- ICMP_INC_STATS(ICMP_MIB_OUTMSGS);
- }
+ ICMPMSGOUT_INC_STATS(type);
+ ICMP_INC_STATS(ICMP_MIB_OUTMSGS);
}
/*
struct sk_buff *skb;
if (ip_append_data(icmp_socket->sk, icmp_glue_bits, icmp_param,
- icmp_param->data_len+icmp_param->head_len,
- icmp_param->head_len,
- ipc, rt, MSG_DONTWAIT) < 0)
+ icmp_param->data_len+icmp_param->head_len,
+ icmp_param->head_len,
+ ipc, rt, MSG_DONTWAIT) < 0)
ip_flush_pending_frames(icmp_socket->sk);
else if ((skb = skb_peek(&icmp_socket->sk->sk_write_queue)) != NULL) {
- struct icmphdr *icmph = skb->h.icmph;
+ struct icmphdr *icmph = icmp_hdr(skb);
__wsum csum = 0;
struct sk_buff *skb1;
return;
icmp_param->data.icmph.checksum = 0;
- icmp_out_count(icmp_param->data.icmph.type);
- inet->tos = skb->nh.iph->tos;
+ inet->tos = ip_hdr(skb)->tos;
daddr = ipc.addr = rt->rt_src;
ipc.opt = NULL;
if (icmp_param->replyopts.optlen) {
struct flowi fl = { .nl_u = { .ip4_u =
{ .daddr = daddr,
.saddr = rt->rt_spec_dst,
- .tos = RT_TOS(skb->nh.iph->tos) } },
+ .tos = RT_TOS(ip_hdr(skb)->tos) } },
.proto = IPPROTO_ICMP };
security_skb_classify_flow(skb, &fl);
if (ip_route_output_key(&rt, &fl))
* Check this, icmp_send is called from the most obscure devices
* sometimes.
*/
- iph = skb_in->nh.iph;
+ iph = ip_hdr(skb_in);
- if ((u8 *)iph < skb_in->head || (u8 *)(iph + 1) > skb_in->tail)
+ if ((u8 *)iph < skb_in->head ||
+ (skb_in->network_header + sizeof(*iph)) > skb_in->tail)
goto out;
/*
u8 _inner_type, *itp;
itp = skb_header_pointer(skb_in,
- skb_in->nh.raw +
+ skb_network_header(skb_in) +
(iph->ihl << 2) +
offsetof(struct icmphdr,
type) -
saddr = iph->daddr;
if (!(rt->rt_flags & RTCF_LOCAL)) {
- if (sysctl_icmp_errors_use_inbound_ifaddr)
- saddr = inet_select_addr(skb_in->dev, 0, RT_SCOPE_LINK);
- else
+ struct net_device *dev = NULL;
+
+ if (rt->fl.iif && sysctl_icmp_errors_use_inbound_ifaddr)
+ dev = dev_get_by_index(&init_net, rt->fl.iif);
+
+ if (dev) {
+ saddr = inet_select_addr(dev, 0, RT_SCOPE_LINK);
+ dev_put(dev);
+ } else
saddr = 0;
}
icmp_param.data.icmph.un.gateway = info;
icmp_param.data.icmph.checksum = 0;
icmp_param.skb = skb_in;
- icmp_param.offset = skb_in->nh.raw - skb_in->data;
+ icmp_param.offset = skb_network_offset(skb_in);
icmp_out_count(icmp_param.data.icmph.type);
inet_sk(icmp_socket->sk)->tos = tos;
ipc.addr = iph->saddr;
if (!pskb_may_pull(skb, sizeof(struct iphdr)))
goto out_err;
- icmph = skb->h.icmph;
+ icmph = icmp_hdr(skb);
iph = (struct iphdr *)skb->data;
if (iph->ihl < 5) /* Mangled header, drop. */
printk(KERN_WARNING "%u.%u.%u.%u sent an invalid ICMP "
"type %u, code %u "
"error to a broadcast: %u.%u.%u.%u on %s\n",
- NIPQUAD(skb->nh.iph->saddr),
+ NIPQUAD(ip_hdr(skb)->saddr),
icmph->type, icmph->code,
NIPQUAD(iph->daddr),
skb->dev->name);
iph = (struct iphdr *)skb->data;
- switch (skb->h.icmph->code & 7) {
+ switch (icmp_hdr(skb)->code & 7) {
case ICMP_REDIR_NET:
case ICMP_REDIR_NETTOS:
/*
*/
case ICMP_REDIR_HOST:
case ICMP_REDIR_HOSTTOS:
- ip_rt_redirect(skb->nh.iph->saddr, iph->daddr,
- skb->h.icmph->un.gateway,
+ ip_rt_redirect(ip_hdr(skb)->saddr, iph->daddr,
+ icmp_hdr(skb)->un.gateway,
iph->saddr, skb->dev);
break;
- }
+ }
out:
return;
out_err:
if (!sysctl_icmp_echo_ignore_all) {
struct icmp_bxm icmp_param;
- icmp_param.data.icmph = *skb->h.icmph;
+ icmp_param.data.icmph = *icmp_hdr(skb);
icmp_param.data.icmph.type = ICMP_ECHOREPLY;
icmp_param.skb = skb;
icmp_param.offset = 0;
icmp_param.data.times[2] = icmp_param.data.times[1];
if (skb_copy_bits(skb, 0, &icmp_param.data.times[0], 4))
BUG();
- icmp_param.data.icmph = *skb->h.icmph;
+ icmp_param.data.icmph = *icmp_hdr(skb);
icmp_param.data.icmph.type = ICMP_TIMESTAMPREPLY;
icmp_param.data.icmph.code = 0;
icmp_param.skb = skb;
if (!pskb_pull(skb, sizeof(struct icmphdr)))
goto error;
- icmph = skb->h.icmph;
+ icmph = icmp_hdr(skb);
+ ICMPMSGIN_INC_STATS_BH(icmph->type);
/*
* 18 is the highest 'known' ICMP type. Anything else is a mystery
*
* Parse the ICMP message
*/
- if (rt->rt_flags & (RTCF_BROADCAST | RTCF_MULTICAST)) {
+ if (rt->rt_flags & (RTCF_BROADCAST | RTCF_MULTICAST)) {
/*
* RFC 1122: 3.2.2.6 An ICMP_ECHO to broadcast MAY be
* silently ignored (we let user decide with a sysctl).
icmph->type != ICMP_ADDRESS &&
icmph->type != ICMP_ADDRESSREPLY) {
goto error;
- }
+ }
}
- ICMP_INC_STATS_BH(icmp_pointers[icmph->type].input_entry);
icmp_pointers[icmph->type].handler(skb);
drop:
*/
static const struct icmp_control icmp_pointers[NR_ICMP_TYPES + 1] = {
[ICMP_ECHOREPLY] = {
- .output_entry = ICMP_MIB_OUTECHOREPS,
- .input_entry = ICMP_MIB_INECHOREPS,
.handler = icmp_discard,
},
[1] = {
- .output_entry = ICMP_MIB_DUMMY,
- .input_entry = ICMP_MIB_INERRORS,
.handler = icmp_discard,
.error = 1,
},
[2] = {
- .output_entry = ICMP_MIB_DUMMY,
- .input_entry = ICMP_MIB_INERRORS,
.handler = icmp_discard,
.error = 1,
},
[ICMP_DEST_UNREACH] = {
- .output_entry = ICMP_MIB_OUTDESTUNREACHS,
- .input_entry = ICMP_MIB_INDESTUNREACHS,
.handler = icmp_unreach,
.error = 1,
},
[ICMP_SOURCE_QUENCH] = {
- .output_entry = ICMP_MIB_OUTSRCQUENCHS,
- .input_entry = ICMP_MIB_INSRCQUENCHS,
.handler = icmp_unreach,
.error = 1,
},
[ICMP_REDIRECT] = {
- .output_entry = ICMP_MIB_OUTREDIRECTS,
- .input_entry = ICMP_MIB_INREDIRECTS,
.handler = icmp_redirect,
.error = 1,
},
[6] = {
- .output_entry = ICMP_MIB_DUMMY,
- .input_entry = ICMP_MIB_INERRORS,
.handler = icmp_discard,
.error = 1,
},
[7] = {
- .output_entry = ICMP_MIB_DUMMY,
- .input_entry = ICMP_MIB_INERRORS,
.handler = icmp_discard,
.error = 1,
},
[ICMP_ECHO] = {
- .output_entry = ICMP_MIB_OUTECHOS,
- .input_entry = ICMP_MIB_INECHOS,
.handler = icmp_echo,
},
[9] = {
- .output_entry = ICMP_MIB_DUMMY,
- .input_entry = ICMP_MIB_INERRORS,
.handler = icmp_discard,
.error = 1,
},
[10] = {
- .output_entry = ICMP_MIB_DUMMY,
- .input_entry = ICMP_MIB_INERRORS,
.handler = icmp_discard,
.error = 1,
},
[ICMP_TIME_EXCEEDED] = {
- .output_entry = ICMP_MIB_OUTTIMEEXCDS,
- .input_entry = ICMP_MIB_INTIMEEXCDS,
.handler = icmp_unreach,
.error = 1,
},
[ICMP_PARAMETERPROB] = {
- .output_entry = ICMP_MIB_OUTPARMPROBS,
- .input_entry = ICMP_MIB_INPARMPROBS,
.handler = icmp_unreach,
.error = 1,
},
[ICMP_TIMESTAMP] = {
- .output_entry = ICMP_MIB_OUTTIMESTAMPS,
- .input_entry = ICMP_MIB_INTIMESTAMPS,
.handler = icmp_timestamp,
},
[ICMP_TIMESTAMPREPLY] = {
- .output_entry = ICMP_MIB_OUTTIMESTAMPREPS,
- .input_entry = ICMP_MIB_INTIMESTAMPREPS,
.handler = icmp_discard,
},
[ICMP_INFO_REQUEST] = {
- .output_entry = ICMP_MIB_DUMMY,
- .input_entry = ICMP_MIB_DUMMY,
.handler = icmp_discard,
},
- [ICMP_INFO_REPLY] = {
- .output_entry = ICMP_MIB_DUMMY,
- .input_entry = ICMP_MIB_DUMMY,
+ [ICMP_INFO_REPLY] = {
.handler = icmp_discard,
},
[ICMP_ADDRESS] = {
- .output_entry = ICMP_MIB_OUTADDRMASKS,
- .input_entry = ICMP_MIB_INADDRMASKS,
.handler = icmp_address,
},
[ICMP_ADDRESSREPLY] = {
- .output_entry = ICMP_MIB_OUTADDRMASKREPS,
- .input_entry = ICMP_MIB_INADDRMASKREPS,
.handler = icmp_address_reply,
},
};
EXPORT_SYMBOL(icmp_err_convert);
EXPORT_SYMBOL(icmp_send);
EXPORT_SYMBOL(icmp_statistics);
+EXPORT_SYMBOL(icmpmsg_statistics);
EXPORT_SYMBOL(xrlim_allow);