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core: Add icmp tracing

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Add events to trace the uplink and downlink ping sequences
through unfragmented icmp echo requests and echo responses.

CRs-Fixed: 2984040
Change-Id: Ibb9176b6f583beeab43e983c7b700248759d1e67
Signed-off-by: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org>
This commit is contained in:
Subash Abhinov Kasiviswanathan
2021-07-02 01:46:28 -07:00
rodzic daf959626b
commit 35c1472b09
3 zmienionych plików z 103 dodań i 1 usunięć
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49
core/rmnet_vnd.c
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@@ -20,7 +20,10 @@
#include <linux/ipv6.h>
#include <linux/tcp.h>
#include <linux/inet.h>
#include <linux/icmp.h>
#include <linux/icmpv6.h>
#include <net/pkt_sched.h>
#include <net/ipv6.h>
#include "rmnet_config.h"
#include "rmnet_handlers.h"
#include "rmnet_private.h"
@@ -250,6 +253,52 @@ static u16 rmnet_vnd_select_queue(struct net_device *dev,
int boost_trigger = 0;
int txq = 0;
if (trace_print_icmp_tx_enabled()) {
char saddr[INET6_ADDRSTRLEN], daddr[INET6_ADDRSTRLEN];
u16 ip_proto = 0;
__be16 sequence = 0;
u8 type = 0;
memset(saddr, 0, INET6_ADDRSTRLEN);
memset(daddr, 0, INET6_ADDRSTRLEN);
if (skb->protocol == htons(ETH_P_IP)) {
if (ip_hdr(skb)->protocol != IPPROTO_ICMP)
goto skip_trace_print_icmp_tx;
if (icmp_hdr(skb)->type != ICMP_ECHOREPLY &&
icmp_hdr(skb)->type != ICMP_ECHO)
goto skip_trace_print_icmp_tx;
ip_proto = htons(ETH_P_IP);
type = icmp_hdr(skb)->type;
sequence = icmp_hdr(skb)->un.echo.sequence;
snprintf(saddr, INET6_ADDRSTRLEN, "%pI4", &ip_hdr(skb)->saddr);
snprintf(daddr, INET6_ADDRSTRLEN, "%pI4", &ip_hdr(skb)->daddr);
}
if (skb->protocol == htons(ETH_P_IPV6)) {
if (ipv6_hdr(skb)->nexthdr != NEXTHDR_ICMP)
goto skip_trace_print_icmp_tx;
if (icmp6_hdr(skb)->icmp6_type != ICMPV6_ECHO_REQUEST &&
icmp6_hdr(skb)->icmp6_type != ICMPV6_ECHO_REPLY)
goto skip_trace_print_icmp_tx;
ip_proto = htons(ETH_P_IPV6);
type = icmp6_hdr(skb)->icmp6_type;
sequence = icmp6_hdr(skb)->icmp6_sequence;
snprintf(saddr, INET6_ADDRSTRLEN, "%pI6", &ipv6_hdr(skb)->saddr);
snprintf(daddr, INET6_ADDRSTRLEN, "%pI6", &ipv6_hdr(skb)->daddr);
}
if (!ip_proto)
goto skip_trace_print_icmp_tx;
trace_print_icmp_tx(skb, ip_proto, type, sequence, saddr, daddr);
}
skip_trace_print_icmp_tx:
if (trace_print_skb_gso_enabled()) {
char saddr[INET6_ADDRSTRLEN], daddr[INET6_ADDRSTRLEN];
u16 ip_proto = 0, xport_proto = 0;