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-rw-r--r--tools/testing/selftests/net/psock_tpacket.c59
1 files changed, 20 insertions, 39 deletions
diff --git a/tools/testing/selftests/net/psock_tpacket.c b/tools/testing/selftests/net/psock_tpacket.c
index c41b58640a05..24adf709bd9d 100644
--- a/tools/testing/selftests/net/psock_tpacket.c
+++ b/tools/testing/selftests/net/psock_tpacket.c
@@ -1,6 +1,7 @@
/*
* Copyright 2013 Red Hat, Inc.
* Author: Daniel Borkmann <dborkman@redhat.com>
+ * Chetan Loke <loke.chetan@gmail.com> (TPACKET_V3 usage example)
*
* A basic test of packet socket's TPACKET_V1/TPACKET_V2/TPACKET_V3 behavior.
*
@@ -71,18 +72,8 @@
# define __align_tpacket(x) __attribute__((aligned(TPACKET_ALIGN(x))))
#endif
-#define BLOCK_STATUS(x) ((x)->h1.block_status)
-#define BLOCK_NUM_PKTS(x) ((x)->h1.num_pkts)
-#define BLOCK_O2FP(x) ((x)->h1.offset_to_first_pkt)
-#define BLOCK_LEN(x) ((x)->h1.blk_len)
-#define BLOCK_SNUM(x) ((x)->h1.seq_num)
-#define BLOCK_O2PRIV(x) ((x)->offset_to_priv)
-#define BLOCK_PRIV(x) ((void *) ((uint8_t *) (x) + BLOCK_O2PRIV(x)))
-#define BLOCK_HDR_LEN (ALIGN_8(sizeof(struct block_desc)))
-#define ALIGN_8(x) (((x) + 8 - 1) & ~(8 - 1))
-#define BLOCK_PLUS_PRIV(sz_pri) (BLOCK_HDR_LEN + ALIGN_8((sz_pri)))
-
#define NUM_PACKETS 100
+#define ALIGN_8(x) (((x) + 8 - 1) & ~(8 - 1))
struct ring {
struct iovec *rd;
@@ -476,41 +467,30 @@ static uint64_t __v3_prev_block_seq_num = 0;
void __v3_test_block_seq_num(struct block_desc *pbd)
{
- if (__v3_prev_block_seq_num + 1 != BLOCK_SNUM(pbd)) {
+ if (__v3_prev_block_seq_num + 1 != pbd->h1.seq_num) {
fprintf(stderr, "\nprev_block_seq_num:%"PRIu64", expected "
"seq:%"PRIu64" != actual seq:%"PRIu64"\n",
__v3_prev_block_seq_num, __v3_prev_block_seq_num + 1,
- (uint64_t) BLOCK_SNUM(pbd));
+ (uint64_t) pbd->h1.seq_num);
exit(1);
}
- __v3_prev_block_seq_num = BLOCK_SNUM(pbd);
+ __v3_prev_block_seq_num = pbd->h1.seq_num;
}
static void __v3_test_block_len(struct block_desc *pbd, uint32_t bytes, int block_num)
{
- if (BLOCK_NUM_PKTS(pbd)) {
- if (bytes != BLOCK_LEN(pbd)) {
- fprintf(stderr, "\nblock:%u with %upackets, expected "
- "len:%u != actual len:%u\n", block_num,
- BLOCK_NUM_PKTS(pbd), bytes, BLOCK_LEN(pbd));
- exit(1);
- }
- } else {
- if (BLOCK_LEN(pbd) != BLOCK_PLUS_PRIV(13)) {
- fprintf(stderr, "\nblock:%u, expected len:%lu != "
- "actual len:%u\n", block_num, BLOCK_HDR_LEN,
- BLOCK_LEN(pbd));
- exit(1);
- }
+ if (pbd->h1.num_pkts && bytes != pbd->h1.blk_len) {
+ fprintf(stderr, "\nblock:%u with %upackets, expected "
+ "len:%u != actual len:%u\n", block_num,
+ pbd->h1.num_pkts, bytes, pbd->h1.blk_len);
+ exit(1);
}
}
static void __v3_test_block_header(struct block_desc *pbd, const int block_num)
{
- uint32_t block_status = BLOCK_STATUS(pbd);
-
- if ((block_status & TP_STATUS_USER) == 0) {
+ if ((pbd->h1.block_status & TP_STATUS_USER) == 0) {
fprintf(stderr, "\nblock %u: not in TP_STATUS_USER\n", block_num);
exit(1);
}
@@ -520,14 +500,15 @@ static void __v3_test_block_header(struct block_desc *pbd, const int block_num)
static void __v3_walk_block(struct block_desc *pbd, const int block_num)
{
- int num_pkts = BLOCK_NUM_PKTS(pbd), i;
- unsigned long bytes = 0;
- unsigned long bytes_with_padding = BLOCK_PLUS_PRIV(13);
+ int num_pkts = pbd->h1.num_pkts, i;
+ unsigned long bytes = 0, bytes_with_padding = ALIGN_8(sizeof(*pbd));
struct tpacket3_hdr *ppd;
__v3_test_block_header(pbd, block_num);
- ppd = (struct tpacket3_hdr *) ((uint8_t *) pbd + BLOCK_O2FP(pbd));
+ ppd = (struct tpacket3_hdr *) ((uint8_t *) pbd +
+ pbd->h1.offset_to_first_pkt);
+
for (i = 0; i < num_pkts; ++i) {
bytes += ppd->tp_snaplen;
@@ -551,7 +532,7 @@ static void __v3_walk_block(struct block_desc *pbd, const int block_num)
void __v3_flush_block(struct block_desc *pbd)
{
- BLOCK_STATUS(pbd) = TP_STATUS_KERNEL;
+ pbd->h1.block_status = TP_STATUS_KERNEL;
__sync_synchronize();
}
@@ -577,7 +558,7 @@ static void walk_v3_rx(int sock, struct ring *ring)
while (total_packets < NUM_PACKETS * 2) {
pbd = (struct block_desc *) ring->rd[block_num].iov_base;
- while ((BLOCK_STATUS(pbd) & TP_STATUS_USER) == 0)
+ while ((pbd->h1.block_status & TP_STATUS_USER) == 0)
poll(&pfd, 1, 1);
__v3_walk_block(pbd, block_num);
@@ -624,8 +605,8 @@ static void __v1_v2_fill(struct ring *ring, unsigned int blocks)
static void __v3_fill(struct ring *ring, unsigned int blocks)
{
ring->req3.tp_retire_blk_tov = 64;
- ring->req3.tp_sizeof_priv = 13;
- ring->req3.tp_feature_req_word |= TP_FT_REQ_FILL_RXHASH;
+ ring->req3.tp_sizeof_priv = 0;
+ ring->req3.tp_feature_req_word = TP_FT_REQ_FILL_RXHASH;
ring->req3.tp_block_size = getpagesize() << 2;
ring->req3.tp_frame_size = TPACKET_ALIGNMENT << 7;