Hi all
I have a vlib_buffer_t packets (in GDB) looks like:
$37 = {cacheline0 = 0x7fff54716f00 "\362\377*", current_data = -14,
current_length = 42, flags = 0, free_list_index = 0,
total_length_not_including_first_buffer = 0, next_buffer = 0,
trace_index = 0, clone_count = 0, error = 401409, opaque = {0, 5, 3, 3, 2,
0, 0, 0}, cacheline1 = 0x7fff54716f40 "", opaque2 = {
0 <repeats 16 times>}, cacheline2 = 0x7fff54716f80 "",
pre_data = '\000' <repeats 114 times>,
"\377\377\377\377\377\377\000\036g\246{\356\b\006", data = 0x7fff54717000 ""}
it is an arp-boardcast packet
and I want to change it into rte_mbuf *, so I called
rte_mbuf_from_vlib_buffer(b)
but the changed rte_mbuf (in GDB) looks like:
$38 = {cacheline0 = 0x7fff54716e80, buf_addr = 0x0, buf_physaddr = 0,
buf_len = 0, rearm_data = 0x7fff54716e92 "", data_off = 0, {refcnt_atomic = {
cnt = 0}, refcnt = 0}, nb_segs = 0 '\000', port = 0 '\000',
ol_flags = 0, rx_descriptor_fields1 = 0x7fff54716ea0, {packet_type = 0, {
l2_type = 0, l3_type = 0, l4_type = 0, tun_type = 0, inner_l2_type = 0,
inner_l3_type = 0, inner_l4_type = 0}}, pkt_len = 0, data_len = 0,
vlan_tci = 0, hash = {rss = 0, fdir = {{{hash = 0, id = 0}, lo = 0},
hi = 0}, sched = {lo = 0, hi = 0}, usr = 0}, seqn = 0,
vlan_tci_outer = 0, cacheline1 = 0x7fff54716ec0, {userdata = 0x0,
udata64 = 0}, pool = 0x0, next = 0x0, {tx_offload = 0, {l2_len = 0,
l3_len = 0, l4_len = 0, tso_segsz = 0, outer_l3_len = 0,
outer_l2_len = 0}}, priv_size = 0, timesync = 0}
my code is :
struct rte_mbuf * mb;
mb = (((struct rte_mbuf *)b) - 1);
//mb = rte_mbuf_from_vlib_buffer(b); I have also tried this way
rte_pktmbuf_data_len(mb) = b->current_length;
mb->pkt_len = b->current_data;
mb->data_off = 128 + b->current_data;
the result may not correct, do you know why?
Best wishes,
Rujun, Li
_______________________________________________
vpp-dev mailing list
vpp-dev@lists.fd.io
https://lists.fd.io/mailman/listinfo/vpp-dev
