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hyperv/hn: Split RX ring data structure out of softc

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This paves the way for upcoming vRSS stuffs and eases more code cleanup.

Reviewed by:	adrian
Approved by:	adrian (mentor)
MFC after:	1 week
Sponsored by:	Microsoft OSTC
Differential Revision:	https://reviews.freebsd.org/D5275
This commit is contained in:
sephe 2016-02-18 07:16:31 +00:00
parent 8fbe53549f
commit 6d988a8a3a
2 changed files with 262 additions and 112 deletions
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34
sys/dev/hyperv/netvsc/hv_net_vsc.h
View File

@ -993,6 +993,24 @@ typedef struct {
struct hn_txdesc;
SLIST_HEAD(hn_txdesc_list, hn_txdesc);
struct hn_rx_ring {
struct lro_ctrl hn_lro;
/* Trust csum verification on host side */
int hn_trust_hcsum; /* HN_TRUST_HCSUM_ */
u_long hn_csum_ip;
u_long hn_csum_tcp;
u_long hn_csum_udp;
u_long hn_csum_trusted;
u_long hn_lro_tried;
u_long hn_small_pkts;
} __aligned(CACHE_LINE_SIZE);
#define HN_TRUST_HCSUM_IP 0x0001
#define HN_TRUST_HCSUM_TCP 0x0002
#define HN_TRUST_HCSUM_UDP 0x0004
/*
* Device-specific softc structure
*/
@ -1029,17 +1047,9 @@ typedef struct hn_softc {
struct task hn_start_task;
struct task hn_txeof_task;
struct lro_ctrl hn_lro;
int hn_rx_ring_cnt;
struct hn_rx_ring *hn_rx_ring;
/* Trust csum verification on host side */
int hn_trust_hcsum; /* HN_TRUST_HCSUM_ */
u_long hn_csum_ip;
u_long hn_csum_tcp;
u_long hn_csum_udp;
u_long hn_csum_trusted;
u_long hn_lro_tried;
u_long hn_small_pkts;
u_long hn_no_txdescs;
u_long hn_send_failed;
u_long hn_txdma_failed;
@ -1047,10 +1057,6 @@ typedef struct hn_softc {
u_long hn_tx_chimney;
} hn_softc_t;
#define HN_TRUST_HCSUM_IP 0x0001
#define HN_TRUST_HCSUM_TCP 0x0002
#define HN_TRUST_HCSUM_UDP 0x0004
/*
* Externs
*/

340
sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c
View File

@ -275,12 +275,16 @@ static int hn_lro_lenlim_sysctl(SYSCTL_HANDLER_ARGS);
static int hn_lro_ackcnt_sysctl(SYSCTL_HANDLER_ARGS);
static int hn_trust_hcsum_sysctl(SYSCTL_HANDLER_ARGS);
static int hn_tx_chimney_size_sysctl(SYSCTL_HANDLER_ARGS);
static int hn_rx_stat_ulong_sysctl(SYSCTL_HANDLER_ARGS);
static int hn_rx_stat_u64_sysctl(SYSCTL_HANDLER_ARGS);
static int hn_check_iplen(const struct mbuf *, int);
static int hn_create_tx_ring(struct hn_softc *sc);
static void hn_destroy_tx_ring(struct hn_softc *sc);
static void hn_start_taskfunc(void *xsc, int pending);
static void hn_txeof_taskfunc(void *xsc, int pending);
static int hn_encap(struct hn_softc *, struct hn_txdesc *, struct mbuf **);
static void hn_create_rx_data(struct hn_softc *sc);
static void hn_destroy_rx_data(struct hn_softc *sc);
static int
hn_ifmedia_upd(struct ifnet *ifp __unused)
@ -351,11 +355,6 @@ netvsc_attach(device_t dev)
int error;
#if __FreeBSD_version >= 1100045
int tso_maxlen;
#endif
#if defined(INET) || defined(INET6)
#if __FreeBSD_version >= 1100095
int lroent_cnt;
#endif
#endif
sc = device_get_softc(dev);
@ -367,12 +366,6 @@ netvsc_attach(device_t dev)
sc->hn_unit = unit;
sc->hn_dev = dev;
sc->hn_direct_tx_size = hn_direct_tx_size;
if (hn_trust_hosttcp)
sc->hn_trust_hcsum |= HN_TRUST_HCSUM_TCP;
if (hn_trust_hostudp)
sc->hn_trust_hcsum |= HN_TRUST_HCSUM_UDP;
if (hn_trust_hostip)
sc->hn_trust_hcsum |= HN_TRUST_HCSUM_IP;
if (hn_tx_taskq == NULL) {
sc->hn_tx_taskq = taskqueue_create_fast("hn_tx", M_WAITOK,
@ -396,6 +389,8 @@ netvsc_attach(device_t dev)
ifp = sc->hn_ifp = if_alloc(IFT_ETHER);
ifp->if_softc = sc;
hn_create_rx_data(sc);
if_initname(ifp, device_get_name(dev), device_get_unit(dev));
ifp->if_dunit = unit;
ifp->if_dname = NETVSC_DEVNAME;
@ -441,22 +436,6 @@ netvsc_attach(device_t dev)
sc->hn_carrier = 1;
}
#if defined(INET) || defined(INET6)
#if __FreeBSD_version >= 1100095
lroent_cnt = hn_lro_entry_count;
if (lroent_cnt < TCP_LRO_ENTRIES)
lroent_cnt = TCP_LRO_ENTRIES;
tcp_lro_init_args(&sc->hn_lro, ifp, lroent_cnt, 0);
device_printf(dev, "LRO: entry count %d\n", lroent_cnt);
#else
tcp_lro_init(&sc->hn_lro);
/* Driver private LRO settings */
sc->hn_lro.ifp = ifp;
#endif
sc->hn_lro.lro_length_lim = HN_LRO_LENLIM_DEF;
sc->hn_lro.lro_ackcnt_lim = HN_LRO_ACKCNT_DEF;
#endif /* INET || INET6 */
#if __FreeBSD_version >= 1100045
tso_maxlen = hn_tso_maxlen;
if (tso_maxlen <= 0 || tso_maxlen > IP_MAXPACKET)
@ -491,44 +470,6 @@ netvsc_attach(device_t dev)
ctx = device_get_sysctl_ctx(dev);
child = SYSCTL_CHILDREN(device_get_sysctl_tree(dev));
SYSCTL_ADD_U64(ctx, child, OID_AUTO, "lro_queued",
CTLFLAG_RW, &sc->hn_lro.lro_queued, 0, "LRO queued");
SYSCTL_ADD_U64(ctx, child, OID_AUTO, "lro_flushed",
CTLFLAG_RW, &sc->hn_lro.lro_flushed, 0, "LRO flushed");
SYSCTL_ADD_ULONG(ctx, child, OID_AUTO, "lro_tried",
CTLFLAG_RW, &sc->hn_lro_tried, "# of LRO tries");
SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "lro_length_lim",
CTLTYPE_UINT | CTLFLAG_RW, sc, 0, hn_lro_lenlim_sysctl, "IU",
"Max # of data bytes to be aggregated by LRO");
SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "lro_ackcnt_lim",
CTLTYPE_INT | CTLFLAG_RW, sc, 0, hn_lro_ackcnt_sysctl, "I",
"Max # of ACKs to be aggregated by LRO");
SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "trust_hosttcp",
CTLTYPE_INT | CTLFLAG_RW, sc, HN_TRUST_HCSUM_TCP,
hn_trust_hcsum_sysctl, "I",
"Trust tcp segement verification on host side, "
"when csum info is missing");
SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "trust_hostudp",
CTLTYPE_INT | CTLFLAG_RW, sc, HN_TRUST_HCSUM_UDP,
hn_trust_hcsum_sysctl, "I",
"Trust udp datagram verification on host side, "
"when csum info is missing");
SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "trust_hostip",
CTLTYPE_INT | CTLFLAG_RW, sc, HN_TRUST_HCSUM_IP,
hn_trust_hcsum_sysctl, "I",
"Trust ip packet verification on host side, "
"when csum info is missing");
SYSCTL_ADD_ULONG(ctx, child, OID_AUTO, "csum_ip",
CTLFLAG_RW, &sc->hn_csum_ip, "RXCSUM IP");
SYSCTL_ADD_ULONG(ctx, child, OID_AUTO, "csum_tcp",
CTLFLAG_RW, &sc->hn_csum_tcp, "RXCSUM TCP");
SYSCTL_ADD_ULONG(ctx, child, OID_AUTO, "csum_udp",
CTLFLAG_RW, &sc->hn_csum_udp, "RXCSUM UDP");
SYSCTL_ADD_ULONG(ctx, child, OID_AUTO, "csum_trusted",
CTLFLAG_RW, &sc->hn_csum_trusted,
"# of packets that we trust host's csum verification");
SYSCTL_ADD_ULONG(ctx, child, OID_AUTO, "small_pkts",
CTLFLAG_RW, &sc->hn_small_pkts, "# of small packets received");
SYSCTL_ADD_ULONG(ctx, child, OID_AUTO, "no_txdescs",
CTLFLAG_RW, &sc->hn_no_txdescs, "# of times short of TX descs");
SYSCTL_ADD_ULONG(ctx, child, OID_AUTO, "send_failed",
@ -596,9 +537,7 @@ netvsc_detach(device_t dev)
taskqueue_free(sc->hn_tx_taskq);
ifmedia_removeall(&sc->hn_media);
#if defined(INET) || defined(INET6)
tcp_lro_free(&sc->hn_lro);
#endif
hn_destroy_rx_data(sc);
hn_destroy_tx_ring(sc);
return (0);
@ -746,7 +685,8 @@ netvsc_channel_rollup(struct hv_device *device_ctx)
{
struct hn_softc *sc = device_get_softc(device_ctx->device);
#if defined(INET) || defined(INET6)
struct lro_ctrl *lro = &sc->hn_lro;
struct hn_rx_ring *rxr = &sc->hn_rx_ring[0]; /* TODO: vRSS */
struct lro_ctrl *lro = &rxr->hn_lro;
struct lro_entry *queued;
while ((queued = SLIST_FIRST(&lro->lro_active)) != NULL) {
@ -1162,10 +1102,10 @@ int
netvsc_recv(struct hv_device *device_ctx, netvsc_packet *packet,
rndis_tcp_ip_csum_info *csum_info)
{
hn_softc_t *sc = (hn_softc_t *)device_get_softc(device_ctx->device);
struct hn_softc *sc = device_get_softc(device_ctx->device);
struct hn_rx_ring *rxr = &sc->hn_rx_ring[0]; /* TODO: vRSS */
struct mbuf *m_new;
struct ifnet *ifp;
device_t dev = device_ctx->device;
int size, do_lro = 0, do_csum = 1;
if (sc == NULL) {
@ -1190,7 +1130,7 @@ netvsc_recv(struct hv_device *device_ctx, netvsc_packet *packet,
memcpy(mtod(m_new, void *), packet->data,
packet->tot_data_buf_len);
m_new->m_pkthdr.len = m_new->m_len = packet->tot_data_buf_len;
sc->hn_small_pkts++;
rxr->hn_small_pkts++;
} else {
/*
* Get an mbuf with a cluster. For packets 2K or less,
@ -1206,7 +1146,7 @@ netvsc_recv(struct hv_device *device_ctx, netvsc_packet *packet,
m_new = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, size);
if (m_new == NULL) {
device_printf(dev, "alloc mbuf failed.\n");
if_printf(ifp, "alloc mbuf failed.\n");
return (0);
}
@ -1223,7 +1163,7 @@ netvsc_recv(struct hv_device *device_ctx, netvsc_packet *packet,
if (csum_info->receive.ip_csum_succeeded && do_csum) {
m_new->m_pkthdr.csum_flags |=
(CSUM_IP_CHECKED | CSUM_IP_VALID);
sc->hn_csum_ip++;
rxr->hn_csum_ip++;
}
/* TCP/UDP csum offload */
@ -1233,9 +1173,9 @@ netvsc_recv(struct hv_device *device_ctx, netvsc_packet *packet,
(CSUM_DATA_VALID | CSUM_PSEUDO_HDR);
m_new->m_pkthdr.csum_data = 0xffff;
if (csum_info->receive.tcp_csum_succeeded)
sc->hn_csum_tcp++;
rxr->hn_csum_tcp++;
else
sc->hn_csum_udp++;
rxr->hn_csum_udp++;
}
if (csum_info->receive.ip_csum_succeeded &&
@ -1267,8 +1207,9 @@ netvsc_recv(struct hv_device *device_ctx, netvsc_packet *packet,
pr = hn_check_iplen(m_new, hoff);
if (pr == IPPROTO_TCP) {
if (do_csum &&
(sc->hn_trust_hcsum & HN_TRUST_HCSUM_TCP)) {
sc->hn_csum_trusted++;
(rxr->hn_trust_hcsum &
HN_TRUST_HCSUM_TCP)) {
rxr->hn_csum_trusted++;
m_new->m_pkthdr.csum_flags |=
(CSUM_IP_CHECKED | CSUM_IP_VALID |
CSUM_DATA_VALID | CSUM_PSEUDO_HDR);
@ -1278,16 +1219,17 @@ netvsc_recv(struct hv_device *device_ctx, netvsc_packet *packet,
do_lro = 1;
} else if (pr == IPPROTO_UDP) {
if (do_csum &&
(sc->hn_trust_hcsum & HN_TRUST_HCSUM_UDP)) {
sc->hn_csum_trusted++;
(rxr->hn_trust_hcsum &
HN_TRUST_HCSUM_UDP)) {
rxr->hn_csum_trusted++;
m_new->m_pkthdr.csum_flags |=
(CSUM_IP_CHECKED | CSUM_IP_VALID |
CSUM_DATA_VALID | CSUM_PSEUDO_HDR);
m_new->m_pkthdr.csum_data = 0xffff;
}
} else if (pr != IPPROTO_DONE && do_csum &&
(sc->hn_trust_hcsum & HN_TRUST_HCSUM_IP)) {
sc->hn_csum_trusted++;
(rxr->hn_trust_hcsum & HN_TRUST_HCSUM_IP)) {
rxr->hn_csum_trusted++;
m_new->m_pkthdr.csum_flags |=
(CSUM_IP_CHECKED | CSUM_IP_VALID);
}
@ -1309,10 +1251,10 @@ netvsc_recv(struct hv_device *device_ctx, netvsc_packet *packet,
if ((ifp->if_capenable & IFCAP_LRO) && do_lro) {
#if defined(INET) || defined(INET6)
struct lro_ctrl *lro = &sc->hn_lro;
struct lro_ctrl *lro = &rxr->hn_lro;
if (lro->lro_cnt) {
sc->hn_lro_tried++;
rxr->hn_lro_tried++;
if (tcp_lro_rx(lro, m_new, 0) == 0) {
/* DONE! */
return 0;
@ -1392,8 +1334,17 @@ hn_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
* Make sure that LRO aggregation length limit is still
* valid, after the MTU change.
*/
if (sc->hn_lro.lro_length_lim < HN_LRO_LENLIM_MIN(ifp))
sc->hn_lro.lro_length_lim = HN_LRO_LENLIM_MIN(ifp);
NV_LOCK(sc);
if (sc->hn_rx_ring[0].hn_lro.lro_length_lim <
HN_LRO_LENLIM_MIN(ifp)) {
int i;
for (i = 0; i < sc->hn_rx_ring_cnt; ++i) {
sc->hn_rx_ring[i].hn_lro.lro_length_lim =
HN_LRO_LENLIM_MIN(ifp);
}
}
NV_UNLOCK(sc);
do {
NV_LOCK(sc);
@ -1705,9 +1656,9 @@ hn_lro_lenlim_sysctl(SYSCTL_HANDLER_ARGS)
{
struct hn_softc *sc = arg1;
unsigned int lenlim;
int error;
int error, i;
lenlim = sc->hn_lro.lro_length_lim;
lenlim = sc->hn_rx_ring[0].hn_lro.lro_length_lim;
error = sysctl_handle_int(oidp, &lenlim, 0, req);
if (error || req->newptr == NULL)
return error;
@ -1716,7 +1667,10 @@ hn_lro_lenlim_sysctl(SYSCTL_HANDLER_ARGS)
lenlim > TCP_LRO_LENGTH_MAX)
return EINVAL;
sc->hn_lro.lro_length_lim = lenlim;
NV_LOCK(sc);
for (i = 0; i < sc->hn_rx_ring_cnt; ++i)
sc->hn_rx_ring[i].hn_lro.lro_length_lim = lenlim;
NV_UNLOCK(sc);
return 0;
}
@ -1724,13 +1678,13 @@ static int
hn_lro_ackcnt_sysctl(SYSCTL_HANDLER_ARGS)
{
struct hn_softc *sc = arg1;
int ackcnt, error;
int ackcnt, error, i;
/*
* lro_ackcnt_lim is append count limit,
* +1 to turn it into aggregation limit.
*/
ackcnt = sc->hn_lro.lro_ackcnt_lim + 1;
ackcnt = sc->hn_rx_ring[0].hn_lro.lro_ackcnt_lim + 1;
error = sysctl_handle_int(oidp, &ackcnt, 0, req);
if (error || req->newptr == NULL)
return error;
@ -1742,7 +1696,11 @@ hn_lro_ackcnt_sysctl(SYSCTL_HANDLER_ARGS)
* Convert aggregation limit back to append
* count limit.
*/
sc->hn_lro.lro_ackcnt_lim = ackcnt - 1;
--ackcnt;
NV_LOCK(sc);
for (i = 0; i < sc->hn_rx_ring_cnt; ++i)
sc->hn_rx_ring[i].hn_lro.lro_ackcnt_lim = ackcnt;
NV_UNLOCK(sc);
return 0;
}
@ -1751,10 +1709,10 @@ hn_trust_hcsum_sysctl(SYSCTL_HANDLER_ARGS)
{
struct hn_softc *sc = arg1;
int hcsum = arg2;
int on, error;
int on, error, i;
on = 0;
if (sc->hn_trust_hcsum & hcsum)
if (sc->hn_rx_ring[0].hn_trust_hcsum & hcsum)
on = 1;
error = sysctl_handle_int(oidp, &on, 0, req);
@ -1762,10 +1720,14 @@ hn_trust_hcsum_sysctl(SYSCTL_HANDLER_ARGS)
return error;
NV_LOCK(sc);
if (on)
sc->hn_trust_hcsum |= hcsum;
else
sc->hn_trust_hcsum &= ~hcsum;
for (i = 0; i < sc->hn_rx_ring_cnt; ++i) {
struct hn_rx_ring *rxr = &sc->hn_rx_ring[i];
if (on)
rxr->hn_trust_hcsum |= hcsum;
else
rxr->hn_trust_hcsum &= ~hcsum;
}
NV_UNLOCK(sc);
return 0;
}
@ -1789,6 +1751,58 @@ hn_tx_chimney_size_sysctl(SYSCTL_HANDLER_ARGS)
return 0;
}
static int
hn_rx_stat_ulong_sysctl(SYSCTL_HANDLER_ARGS)
{
struct hn_softc *sc = arg1;
int ofs = arg2, i, error;
struct hn_rx_ring *rxr;
u_long stat;
stat = 0;
for (i = 0; i < sc->hn_rx_ring_cnt; ++i) {
rxr = &sc->hn_rx_ring[i];
stat += *((u_long *)((uint8_t *)rxr + ofs));
}
error = sysctl_handle_long(oidp, &stat, 0, req);
if (error || req->newptr == NULL)
return error;
/* Zero out this stat. */
for (i = 0; i < sc->hn_rx_ring_cnt; ++i) {
rxr = &sc->hn_rx_ring[i];
*((u_long *)((uint8_t *)rxr + ofs)) = 0;
}
return 0;
}
static int
hn_rx_stat_u64_sysctl(SYSCTL_HANDLER_ARGS)
{
struct hn_softc *sc = arg1;
int ofs = arg2, i, error;
struct hn_rx_ring *rxr;
uint64_t stat;
stat = 0;
for (i = 0; i < sc->hn_rx_ring_cnt; ++i) {
rxr = &sc->hn_rx_ring[i];
stat += *((uint64_t *)((uint8_t *)rxr + ofs));
}
error = sysctl_handle_64(oidp, &stat, 0, req);
if (error || req->newptr == NULL)
return error;
/* Zero out this stat. */
for (i = 0; i < sc->hn_rx_ring_cnt; ++i) {
rxr = &sc->hn_rx_ring[i];
*((uint64_t *)((uint8_t *)rxr + ofs)) = 0;
}
return 0;
}
static int
hn_check_iplen(const struct mbuf *m, int hoff)
{
@ -1876,6 +1890,136 @@ hn_dma_map_paddr(void *arg, bus_dma_segment_t *segs, int nseg, int error)
*paddr = segs->ds_addr;
}
static void
hn_create_rx_data(struct hn_softc *sc)
{
struct sysctl_oid_list *child;
struct sysctl_ctx_list *ctx;
device_t dev = sc->hn_dev;
#if defined(INET) || defined(INET6)
#if __FreeBSD_version >= 1100095
int lroent_cnt;
#endif
#endif
int i;
sc->hn_rx_ring_cnt = 1; /* TODO: vRSS */
sc->hn_rx_ring = malloc(sizeof(struct hn_rx_ring) * sc->hn_rx_ring_cnt,
M_NETVSC, M_WAITOK | M_ZERO);
#if defined(INET) || defined(INET6)
#if __FreeBSD_version >= 1100095
lroent_cnt = hn_lro_entry_count;
if (lroent_cnt < TCP_LRO_ENTRIES)
lroent_cnt = TCP_LRO_ENTRIES;
device_printf(dev, "LRO: entry count %d\n", lroent_cnt);
#endif
#endif /* INET || INET6 */
for (i = 0; i < sc->hn_rx_ring_cnt; ++i) {
struct hn_rx_ring *rxr = &sc->hn_rx_ring[i];
if (hn_trust_hosttcp)
rxr->hn_trust_hcsum |= HN_TRUST_HCSUM_TCP;
if (hn_trust_hostudp)
rxr->hn_trust_hcsum |= HN_TRUST_HCSUM_UDP;
if (hn_trust_hostip)
rxr->hn_trust_hcsum |= HN_TRUST_HCSUM_IP;
/*
* Initialize LRO.
*/
#if defined(INET) || defined(INET6)
#if __FreeBSD_version >= 1100095
tcp_lro_init_args(&rxr->hn_lro, sc->hn_ifp, lroent_cnt, 0);
#else
tcp_lro_init(&rxr->hn_lro);
rxr->hn_lro.ifp = sc->hn_ifp;
#endif
rxr->hn_lro.lro_length_lim = HN_LRO_LENLIM_DEF;
rxr->hn_lro.lro_ackcnt_lim = HN_LRO_ACKCNT_DEF;
#endif /* INET || INET6 */
}
ctx = device_get_sysctl_ctx(dev);
child = SYSCTL_CHILDREN(device_get_sysctl_tree(dev));
SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "lro_queued",
CTLTYPE_U64 | CTLFLAG_RW, sc,
__offsetof(struct hn_rx_ring, hn_lro.lro_queued),
hn_rx_stat_u64_sysctl, "LU", "LRO queued");
SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "lro_flushed",
CTLTYPE_U64 | CTLFLAG_RW, sc,
__offsetof(struct hn_rx_ring, hn_lro.lro_flushed),
hn_rx_stat_u64_sysctl, "LU", "LRO flushed");
SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "lro_tried",
CTLTYPE_ULONG | CTLFLAG_RW, sc,
__offsetof(struct hn_rx_ring, hn_lro_tried),
hn_rx_stat_ulong_sysctl, "LU", "# of LRO tries");
SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "lro_length_lim",
CTLTYPE_UINT | CTLFLAG_RW, sc, 0, hn_lro_lenlim_sysctl, "IU",
"Max # of data bytes to be aggregated by LRO");
SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "lro_ackcnt_lim",
CTLTYPE_INT | CTLFLAG_RW, sc, 0, hn_lro_ackcnt_sysctl, "I",
"Max # of ACKs to be aggregated by LRO");
SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "trust_hosttcp",
CTLTYPE_INT | CTLFLAG_RW, sc, HN_TRUST_HCSUM_TCP,
hn_trust_hcsum_sysctl, "I",
"Trust tcp segement verification on host side, "
"when csum info is missing");
SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "trust_hostudp",
CTLTYPE_INT | CTLFLAG_RW, sc, HN_TRUST_HCSUM_UDP,
hn_trust_hcsum_sysctl, "I",
"Trust udp datagram verification on host side, "
"when csum info is missing");
SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "trust_hostip",
CTLTYPE_INT | CTLFLAG_RW, sc, HN_TRUST_HCSUM_IP,
hn_trust_hcsum_sysctl, "I",
"Trust ip packet verification on host side, "
"when csum info is missing");
SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "csum_ip",
CTLTYPE_ULONG | CTLFLAG_RW, sc,
__offsetof(struct hn_rx_ring, hn_csum_ip),
hn_rx_stat_ulong_sysctl, "LU", "RXCSUM IP");
SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "csum_tcp",
CTLTYPE_ULONG | CTLFLAG_RW, sc,
__offsetof(struct hn_rx_ring, hn_csum_tcp),
hn_rx_stat_ulong_sysctl, "LU", "RXCSUM TCP");
SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "csum_udp",
CTLTYPE_ULONG | CTLFLAG_RW, sc,
__offsetof(struct hn_rx_ring, hn_csum_udp),
hn_rx_stat_ulong_sysctl, "LU", "RXCSUM UDP");
SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "csum_trusted",
CTLTYPE_ULONG | CTLFLAG_RW, sc,
__offsetof(struct hn_rx_ring, hn_csum_trusted),
hn_rx_stat_ulong_sysctl, "LU",
"# of packets that we trust host's csum verification");
SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "small_pkts",
CTLTYPE_ULONG | CTLFLAG_RW, sc,
__offsetof(struct hn_rx_ring, hn_small_pkts),
hn_rx_stat_ulong_sysctl, "LU", "# of small packets received");
}
static void
hn_destroy_rx_data(struct hn_softc *sc)
{
#if defined(INET) || defined(INET6)
int i;
#endif
if (sc->hn_rx_ring_cnt == 0)
return;
#if defined(INET) || defined(INET6)
for (i = 0; i < sc->hn_rx_ring_cnt; ++i)
tcp_lro_free(&sc->hn_rx_ring[i].hn_lro);
#endif
free(sc->hn_rx_ring, M_NETVSC);
sc->hn_rx_ring = NULL;
sc->hn_rx_ring_cnt = 0;
}
static int
hn_create_tx_ring(struct hn_softc *sc)
{