A few useful tracepoints developing VRF driver.
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| 1 | +#undef TRACE_SYSTEM | |
| 2 | +#define TRACE_SYSTEM fib | |
| 3 | + | |
| 4 | +#if !defined(_TRACE_FIB_H) || defined(TRACE_HEADER_MULTI_READ) | |
| 5 | +#define _TRACE_FIB_H | |
| 6 | + | |
| 7 | +#include <linux/skbuff.h> | |
| 8 | +#include <linux/netdevice.h> | |
| 9 | +#include <net/ip_fib.h> | |
| 10 | +#include <linux/tracepoint.h> | |
| 11 | + | |
| 12 | +TRACE_EVENT(fib_table_lookup, | |
| 13 | + | |
| 14 | + TP_PROTO(int tb_id, const struct flowi4 *flp), | |
| 15 | + | |
| 16 | + TP_ARGS(tb_id, flp), | |
| 17 | + | |
| 18 | + TP_STRUCT__entry( | |
| 19 | + __field( int, tb_id ) | |
| 20 | + __field( int, oif ) | |
| 21 | + __field( int, iif ) | |
| 22 | + __field( __u8, tos ) | |
| 23 | + __field( __u8, scope ) | |
| 24 | + __field( __u8, flags ) | |
| 25 | + __array( __u8, src, 4 ) | |
| 26 | + __array( __u8, dst, 4 ) | |
| 27 | + ), | |
| 28 | + | |
| 29 | + TP_fast_assign( | |
| 30 | + __be32 *p32; | |
| 31 | + | |
| 32 | + __entry->tb_id = tb_id; | |
| 33 | + __entry->oif = flp->flowi4_oif; | |
| 34 | + __entry->iif = flp->flowi4_iif; | |
| 35 | + __entry->tos = flp->flowi4_tos; | |
| 36 | + __entry->scope = flp->flowi4_scope; | |
| 37 | + __entry->flags = flp->flowi4_flags; | |
| 38 | + | |
| 39 | + p32 = (__be32 *) __entry->src; | |
| 40 | + *p32 = flp->saddr; | |
| 41 | + | |
| 42 | + p32 = (__be32 *) __entry->dst; | |
| 43 | + *p32 = flp->daddr; | |
| 44 | + ), | |
| 45 | + | |
| 46 | + TP_printk("table %d oif %d iif %d src %pI4 dst %pI4 tos %d scope %d flags %x", | |
| 47 | + __entry->tb_id, __entry->oif, __entry->iif, | |
| 48 | + __entry->src, __entry->dst, __entry->tos, __entry->scope, | |
| 49 | + __entry->flags) | |
| 50 | +); | |
| 51 | + | |
| 52 | +TRACE_EVENT(fib_table_lookup_nh, | |
| 53 | + | |
| 54 | + TP_PROTO(const struct fib_nh *nh), | |
| 55 | + | |
| 56 | + TP_ARGS(nh), | |
| 57 | + | |
| 58 | + TP_STRUCT__entry( | |
| 59 | + __string( name, nh->nh_dev->name) | |
| 60 | + __field( int, oif ) | |
| 61 | + __array( __u8, src, 4 ) | |
| 62 | + ), | |
| 63 | + | |
| 64 | + TP_fast_assign( | |
| 65 | + __be32 *p32 = (__be32 *) __entry->src; | |
| 66 | + | |
| 67 | + __assign_str(name, nh->nh_dev ? nh->nh_dev->name : "not set"); | |
| 68 | + __entry->oif = nh->nh_oif; | |
| 69 | + *p32 = nh->nh_saddr; | |
| 70 | + ), | |
| 71 | + | |
| 72 | + TP_printk("nexthop dev %s oif %d src %pI4", | |
| 73 | + __get_str(name), __entry->oif, __entry->src) | |
| 74 | +); | |
| 75 | + | |
| 76 | +TRACE_EVENT(fib_validate_source, | |
| 77 | + | |
| 78 | + TP_PROTO(const struct net_device *dev, const struct flowi4 *flp), | |
| 79 | + | |
| 80 | + TP_ARGS(dev, flp), | |
| 81 | + | |
| 82 | + TP_STRUCT__entry( | |
| 83 | + __string( name, dev->name ) | |
| 84 | + __field( int, oif ) | |
| 85 | + __field( int, iif ) | |
| 86 | + __array( __u8, src, 4 ) | |
| 87 | + __array( __u8, dst, 4 ) | |
| 88 | + ), | |
| 89 | + | |
| 90 | + TP_fast_assign( | |
| 91 | + __be32 *p32; | |
| 92 | + | |
| 93 | + __assign_str(name, dev ? dev->name : "not set"); | |
| 94 | + __entry->oif = flp->flowi4_oif; | |
| 95 | + __entry->iif = flp->flowi4_iif; | |
| 96 | + | |
| 97 | + p32 = (__be32 *) __entry->src; | |
| 98 | + *p32 = flp->saddr; | |
| 99 | + | |
| 100 | + p32 = (__be32 *) __entry->dst; | |
| 101 | + *p32 = flp->daddr; | |
| 102 | + ), | |
| 103 | + | |
| 104 | + TP_printk("dev %s oif %d iif %d src %pI4 dst %pI4", | |
| 105 | + __get_str(name), __entry->oif, __entry->iif, | |
| 106 | + __entry->src, __entry->dst) | |
| 107 | +); | |
| 108 | +#endif /* _TRACE_FIB_H */ | |
| 109 | + | |
| 110 | +/* This part must be outside protection */ | |
| 111 | +#include <trace/define_trace.h> | |