* Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
- * Copyright (c) 2011, 2016, Intel Corporation.
+ * Copyright (c) 2011, 2017, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
}
int
-ksocknal_lib_send_iov(struct ksock_conn *conn, struct ksock_tx *tx)
+ksocknal_lib_send_hdr(struct ksock_conn *conn, struct ksock_tx *tx,
+ struct kvec *scratchiov)
{
struct socket *sock = conn->ksnc_sock;
- int nob;
+ int nob = 0;
int rc;
if (*ksocknal_tunables.ksnd_enable_csum && /* checksum enabled */
struct kvec *scratchiov = &scratch;
unsigned int niov = 1;
#else
- struct kvec *scratchiov = conn->ksnc_scheduler->kss_scratch_iov;
unsigned int niov = tx->tx_niov;
#endif
struct msghdr msg = { .msg_flags = MSG_DONTWAIT };
- int i;
- for (nob = i = 0; i < niov; i++) {
- scratchiov[i] = tx->tx_iov[i];
- nob += scratchiov[i].iov_len;
+ if (tx->tx_niov) {
+ scratchiov[0] = tx->tx_hdr;
+ nob += scratchiov[0].iov_len;
}
if (!list_empty(&conn->ksnc_tx_queue) ||
}
int
-ksocknal_lib_send_kiov(struct ksock_conn *conn, struct ksock_tx *tx)
+ksocknal_lib_send_kiov(struct ksock_conn *conn, struct ksock_tx *tx,
+ struct kvec *scratchiov)
{
- struct socket *sock = conn->ksnc_sock;
- lnet_kiov_t *kiov = tx->tx_kiov;
- int rc;
- int nob;
+ struct socket *sock = conn->ksnc_sock;
+ struct bio_vec *kiov = tx->tx_kiov;
+ int rc;
+ int nob;
- /* Not NOOP message */
- LASSERT (tx->tx_lnetmsg != NULL);
+ /* Not NOOP message */
+ LASSERT(tx->tx_lnetmsg != NULL);
- /* NB we can't trust socket ops to either consume our iovs
- * or leave them alone. */
- if (tx->tx_msg.ksm_zc_cookies[0] != 0) {
- /* Zero copy is enabled */
- struct sock *sk = sock->sk;
- struct page *page = kiov->kiov_page;
- int offset = kiov->kiov_offset;
- int fragsize = kiov->kiov_len;
- int msgflg = MSG_DONTWAIT;
+ /* NB we can't trust socket ops to either consume our iovs
+ * or leave them alone. */
+ if (tx->tx_msg.ksm_zc_cookies[0] != 0) {
+ /* Zero copy is enabled */
+ struct sock *sk = sock->sk;
+ struct page *page = kiov->bv_page;
+ int offset = kiov->bv_offset;
+ int fragsize = kiov->bv_len;
+ int msgflg = MSG_DONTWAIT;
- CDEBUG(D_NET, "page %p + offset %x for %d\n",
- page, offset, kiov->kiov_len);
+ CDEBUG(D_NET, "page %p + offset %x for %d\n",
+ page, offset, kiov->bv_len);
if (!list_empty(&conn->ksnc_tx_queue) ||
- fragsize < tx->tx_resid)
- msgflg |= MSG_MORE;
-
- if (sk->sk_prot->sendpage != NULL) {
- rc = sk->sk_prot->sendpage(sk, page,
- offset, fragsize, msgflg);
- } else {
- rc = cfs_tcp_sendpage(sk, page, offset, fragsize,
- msgflg);
- }
- } else {
+ fragsize < tx->tx_resid)
+ msgflg |= MSG_MORE;
+
+ rc = sk->sk_prot->sendpage(sk, page,
+ offset, fragsize, msgflg);
+ } else {
#if SOCKNAL_SINGLE_FRAG_TX || !SOCKNAL_RISK_KMAP_DEADLOCK
struct kvec scratch;
struct kvec *scratchiov = &scratch;
#ifdef CONFIG_HIGHMEM
#warning "XXX risk of kmap deadlock on multiple frags..."
#endif
- struct kvec *scratchiov = conn->ksnc_scheduler->kss_scratch_iov;
unsigned int niov = tx->tx_nkiov;
#endif
struct msghdr msg = { .msg_flags = MSG_DONTWAIT };
int i;
for (nob = i = 0; i < niov; i++) {
- scratchiov[i].iov_base = kmap(kiov[i].kiov_page) +
- kiov[i].kiov_offset;
- nob += scratchiov[i].iov_len = kiov[i].kiov_len;
+ scratchiov[i].iov_base = kmap(kiov[i].bv_page) +
+ kiov[i].bv_offset;
+ nob += scratchiov[i].iov_len = kiov[i].bv_len;
}
if (!list_empty(&conn->ksnc_tx_queue) ||
rc = kernel_sendmsg(sock, &msg, scratchiov, niov, nob);
for (i = 0; i < niov; i++)
- kunmap(kiov[i].kiov_page);
+ kunmap(kiov[i].bv_page);
}
return rc;
}
}
int
-ksocknal_lib_recv_iov(struct ksock_conn *conn)
+ksocknal_lib_recv_iov(struct ksock_conn *conn, struct kvec *scratchiov)
{
#if SOCKNAL_SINGLE_FRAG_RX
struct kvec scratch;
struct kvec *scratchiov = &scratch;
unsigned int niov = 1;
#else
- struct kvec *scratchiov = conn->ksnc_scheduler->kss_scratch_iov;
unsigned int niov = conn->ksnc_rx_niov;
#endif
struct kvec *iov = conn->ksnc_rx_iov;
}
static void *
-ksocknal_lib_kiov_vmap(lnet_kiov_t *kiov, int niov,
+ksocknal_lib_kiov_vmap(struct bio_vec *kiov, int niov,
struct kvec *iov, struct page **pages)
{
void *addr;
niov < *ksocknal_tunables.ksnd_zc_recv_min_nfrags)
return NULL;
- for (nob = i = 0; i < niov; i++) {
- if ((kiov[i].kiov_offset != 0 && i > 0) ||
- (kiov[i].kiov_offset + kiov[i].kiov_len !=
+ for (nob = i = 0; i < niov; i++) {
+ if ((kiov[i].bv_offset != 0 && i > 0) ||
+ (kiov[i].bv_offset + kiov[i].bv_len !=
PAGE_SIZE && i < niov - 1))
- return NULL;
+ return NULL;
- pages[i] = kiov[i].kiov_page;
- nob += kiov[i].kiov_len;
- }
+ pages[i] = kiov[i].bv_page;
+ nob += kiov[i].bv_len;
+ }
- addr = vmap(pages, niov, VM_MAP, PAGE_KERNEL);
- if (addr == NULL)
- return NULL;
+ addr = vmap(pages, niov, VM_MAP, PAGE_KERNEL);
+ if (addr == NULL)
+ return NULL;
- iov->iov_base = addr + kiov[0].kiov_offset;
- iov->iov_len = nob;
+ iov->iov_base = addr + kiov[0].bv_offset;
+ iov->iov_len = nob;
- return addr;
+ return addr;
}
int
-ksocknal_lib_recv_kiov(struct ksock_conn *conn)
+ksocknal_lib_recv_kiov(struct ksock_conn *conn, struct page **pages,
+ struct kvec *scratchiov)
{
#if SOCKNAL_SINGLE_FRAG_RX || !SOCKNAL_RISK_KMAP_DEADLOCK
struct kvec scratch;
#ifdef CONFIG_HIGHMEM
#warning "XXX risk of kmap deadlock on multiple frags..."
#endif
- struct kvec *scratchiov = conn->ksnc_scheduler->kss_scratch_iov;
- struct page **pages = conn->ksnc_scheduler->kss_rx_scratch_pgs;
unsigned int niov = conn->ksnc_rx_nkiov;
#endif
- lnet_kiov_t *kiov = conn->ksnc_rx_kiov;
+ struct bio_vec *kiov = conn->ksnc_rx_kiov;
struct msghdr msg = {
.msg_flags = 0
};
} else {
for (nob = i = 0; i < niov; i++) {
- nob += scratchiov[i].iov_len = kiov[i].kiov_len;
- scratchiov[i].iov_base = kmap(kiov[i].kiov_page) +
- kiov[i].kiov_offset;
+ nob += scratchiov[i].iov_len = kiov[i].bv_len;
+ scratchiov[i].iov_base = kmap(kiov[i].bv_page) +
+ kiov[i].bv_offset;
}
n = niov;
}
rc = kernel_recvmsg(conn->ksnc_sock, &msg, scratchiov, n, nob,
MSG_DONTWAIT);
- if (conn->ksnc_msg.ksm_csum != 0) {
- for (i = 0, sum = rc; sum > 0; i++, sum -= fragnob) {
- LASSERT (i < niov);
+ if (conn->ksnc_msg.ksm_csum != 0) {
+ for (i = 0, sum = rc; sum > 0; i++, sum -= fragnob) {
+ LASSERT(i < niov);
- /* Dang! have to kmap again because I have nowhere to stash the
- * mapped address. But by doing it while the page is still
- * mapped, the kernel just bumps the map count and returns me
- * the address it stashed. */
- base = kmap(kiov[i].kiov_page) + kiov[i].kiov_offset;
- fragnob = kiov[i].kiov_len;
- if (fragnob > sum)
- fragnob = sum;
+ /* Dang! have to kmap again because I have nowhere to
+ * stash the mapped address. But by doing it while the
+ * page is still mapped, the kernel just bumps the map
+ * count and returns me the address it stashed.
+ */
+ base = kmap(kiov[i].bv_page) + kiov[i].bv_offset;
+ fragnob = kiov[i].bv_len;
+ if (fragnob > sum)
+ fragnob = sum;
- conn->ksnc_rx_csum = ksocknal_csum(conn->ksnc_rx_csum,
- base, fragnob);
+ conn->ksnc_rx_csum = ksocknal_csum(conn->ksnc_rx_csum,
+ base, fragnob);
- kunmap(kiov[i].kiov_page);
- }
- }
+ kunmap(kiov[i].bv_page);
+ }
+ }
- if (addr != NULL) {
- ksocknal_lib_kiov_vunmap(addr);
- } else {
- for (i = 0; i < niov; i++)
- kunmap(kiov[i].kiov_page);
- }
+ if (addr != NULL) {
+ ksocknal_lib_kiov_vunmap(addr);
+ } else {
+ for (i = 0; i < niov; i++)
+ kunmap(kiov[i].bv_page);
+ }
- return (rc);
+ return rc;
}
void
__u32 csum;
void *base;
- LASSERT(tx->tx_iov[0].iov_base == (void *)&tx->tx_msg);
- LASSERT(tx->tx_conn != NULL);
- LASSERT(tx->tx_conn->ksnc_proto == &ksocknal_protocol_v2x);
+ LASSERT(tx->tx_hdr.iov_base == (void *)&tx->tx_msg);
+ LASSERT(tx->tx_conn != NULL);
+ LASSERT(tx->tx_conn->ksnc_proto == &ksocknal_protocol_v2x);
tx->tx_msg.ksm_csum = 0;
- csum = ksocknal_csum(~0, (void *)tx->tx_iov[0].iov_base,
- tx->tx_iov[0].iov_len);
+ csum = ksocknal_csum(~0, (void *)tx->tx_hdr.iov_base,
+ tx->tx_hdr.iov_len);
- if (tx->tx_kiov != NULL) {
- for (i = 0; i < tx->tx_nkiov; i++) {
- base = kmap(tx->tx_kiov[i].kiov_page) +
- tx->tx_kiov[i].kiov_offset;
+ for (i = 0; i < tx->tx_nkiov; i++) {
+ base = kmap(tx->tx_kiov[i].bv_page) +
+ tx->tx_kiov[i].bv_offset;
- csum = ksocknal_csum(csum, base, tx->tx_kiov[i].kiov_len);
+ csum = ksocknal_csum(csum, base, tx->tx_kiov[i].bv_len);
- kunmap(tx->tx_kiov[i].kiov_page);
- }
- } else {
- for (i = 1; i < tx->tx_niov; i++)
- csum = ksocknal_csum(csum, tx->tx_iov[i].iov_base,
- tx->tx_iov[i].iov_len);
- }
+ kunmap(tx->tx_kiov[i].bv_page);
+ }
if (*ksocknal_tunables.ksnd_inject_csum_error) {
csum++;
sock->sk->sk_user_data = conn;
sock->sk->sk_data_ready = ksocknal_data_ready;
sock->sk->sk_write_space = ksocknal_write_space;
- return;
}
void
git://git.whamcloud.com / fs / lustre-release.git / blobdiff