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hyperv/hn: Pull data path code up.

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MFC after:	1 week
Sponsored by:	Microsoft
Differential Revision:	https://reviews.freebsd.org/D8357
This commit is contained in:
Sepherosa Ziehau 2016-10-28 08:18:49 +00:00
parent 91938ebba8
commit 8ef7124558
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=308015
3 changed files with 36 additions and 40 deletions
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36
sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c
View File

@ -1244,6 +1244,42 @@ hn_rndis_pktmsg_offset(uint32_t ofs)
return (ofs - __offsetof(struct rndis_packet_msg, rm_dataoffset));
}
static __inline void *
hn_rndis_pktinfo_append(struct rndis_packet_msg *pkt, size_t pktsize,
size_t pi_dlen, uint32_t pi_type)
{
const size_t pi_size = HN_RNDIS_PKTINFO_SIZE(pi_dlen);
struct rndis_pktinfo *pi;
KASSERT((pi_size & RNDIS_PACKET_MSG_OFFSET_ALIGNMASK) == 0,
("unaligned pktinfo size %zu, pktinfo dlen %zu", pi_size, pi_dlen));
/*
* Per-packet-info does not move; it only grows.
*
* NOTE:
* rm_pktinfooffset in this phase counts from the beginning
* of rndis_packet_msg.
*/
KASSERT(pkt->rm_pktinfooffset + pkt->rm_pktinfolen + pi_size <= pktsize,
("%u pktinfo overflows RNDIS packet msg", pi_type));
pi = (struct rndis_pktinfo *)((uint8_t *)pkt + pkt->rm_pktinfooffset +
pkt->rm_pktinfolen);
pkt->rm_pktinfolen += pi_size;
pi->rm_size = pi_size;
pi->rm_type = pi_type;
pi->rm_pktinfooffset = RNDIS_PKTINFO_OFFSET;
/* Data immediately follow per-packet-info. */
pkt->rm_dataoffset += pi_size;
/* Update RNDIS packet msg length */
pkt->rm_len += pi_size;
return (pi->rm_data);
}
/*
* NOTE:
* If this function fails, then both txd and m_head0 will be freed.

36
sys/dev/hyperv/netvsc/hv_rndis_filter.c
View File

@ -104,42 +104,6 @@ hn_rndis_rid(struct hn_softc *sc)
return ((rid & 0xffff) << 16);
}
void *
hn_rndis_pktinfo_append(struct rndis_packet_msg *pkt, size_t pktsize,
size_t pi_dlen, uint32_t pi_type)
{
const size_t pi_size = HN_RNDIS_PKTINFO_SIZE(pi_dlen);
struct rndis_pktinfo *pi;
KASSERT((pi_size & RNDIS_PACKET_MSG_OFFSET_ALIGNMASK) == 0,
("unaligned pktinfo size %zu, pktinfo dlen %zu", pi_size, pi_dlen));
/*
* Per-packet-info does not move; it only grows.
*
* NOTE:
* rm_pktinfooffset in this phase counts from the beginning
* of rndis_packet_msg.
*/
KASSERT(pkt->rm_pktinfooffset + pkt->rm_pktinfolen + pi_size <= pktsize,
("%u pktinfo overflows RNDIS packet msg", pi_type));
pi = (struct rndis_pktinfo *)((uint8_t *)pkt + pkt->rm_pktinfooffset +
pkt->rm_pktinfolen);
pkt->rm_pktinfolen += pi_size;
pi->rm_size = pi_size;
pi->rm_type = pi_type;
pi->rm_pktinfooffset = RNDIS_PKTINFO_OFFSET;
/* Data immediately follow per-packet-info. */
pkt->rm_dataoffset += pi_size;
/* Update RNDIS packet msg length */
pkt->rm_len += pi_size;
return (pi->rm_data);
}
void
hn_rndis_rx_ctrl(struct hn_softc *sc, const void *data, int dlen)
{

4
sys/dev/hyperv/netvsc/if_hnvar.h
View File

@ -231,13 +231,9 @@ struct hn_softc {
#define HN_LINK_FLAG_LINKUP 0x0001
#define HN_LINK_FLAG_NETCHG 0x0002
struct rndis_packet_msg;
int hn_rndis_attach(struct hn_softc *sc, int mtu);
void hn_rndis_detach(struct hn_softc *sc);
int hn_rndis_conf_rss(struct hn_softc *sc, uint16_t flags);
void *hn_rndis_pktinfo_append(struct rndis_packet_msg *,
size_t pktsize, size_t pi_dlen, uint32_t pi_type);
int hn_rndis_query_rsscaps(struct hn_softc *sc, int *rxr_cnt);
int hn_rndis_get_eaddr(struct hn_softc *sc, uint8_t *eaddr);
int hn_rndis_get_linkstatus(struct hn_softc *sc,