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vhost-user: add vhost-user

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add virtio and vhost-user functions to connect with QEMU.

  $ ./passt --vhost-user

and

  # qemu-system-x86_64 ... -m 4G \
        -object memory-backend-memfd,id=memfd0,share=on,size=4G \
        -numa node,memdev=memfd0 \
        -chardev socket,id=chr0,path=/tmp/passt_1.socket \
        -netdev vhost-user,id=netdev0,chardev=chr0 \
        -device virtio-net,mac=9a:2b:2c:2d:2e:2f,netdev=netdev0 \
        ...

Signed-off-by: Laurent Vivier <lvivier@redhat.com>
This commit is contained in:
Laurent Vivier 2024-11-13 09:04:06 +01:00 • committed by Stefano Brivio
parent 007af94bb9
commit 92fe7e967a
24 changed files with 1412 additions and 54 deletions

7
tcp.c
View file

@ -304,6 +304,7 @@
#include "flow_table.h"
#include "tcp_internal.h"
#include "tcp_buf.h"
#include "tcp_vu.h"
/* MSS rounding: see SET_MSS() */
#define MSS_DEFAULT 536
@ -1312,6 +1313,9 @@ int tcp_prepare_flags(const struct ctx *c, struct tcp_tap_conn *conn,
static int tcp_send_flag(const struct ctx *c, struct tcp_tap_conn *conn,
int flags)
{
if (c->mode == MODE_VU)
return tcp_vu_send_flag(c, conn, flags);
return tcp_buf_send_flag(c, conn, flags);
}
@ -1705,6 +1709,9 @@ static int tcp_sock_consume(const struct tcp_tap_conn *conn, uint32_t ack_seq)
*/
static int tcp_data_from_sock(const struct ctx *c, struct tcp_tap_conn *conn)
{
if (c->mode == MODE_VU)
return tcp_vu_data_from_sock(c, conn);
return tcp_buf_data_from_sock(c, conn);
}