search for: good_linear

Displaying 9 results from an estimated 9 matches for "good_linear".

2014 Oct 23
0
[PATCH RFC] tun: fix sparse warnings for virtio headers
...struct tun_file *tfile, * enough room for skb expand head in case it is used. * The rest of the buffer is mapped from userspace. */ - copylen = gso.hdr_len ? gso.hdr_len : GOODCOPY_LEN; + copylen = gso.hdr_len ? __virtio16_to_cpu(false, gso.hdr_len) : GOODCOPY_LEN; if (copylen > good_linear) copylen = good_linear; linear = copylen; @@ -1075,10 +1075,10 @@ static ssize_t tun_get_user(struct tun_struct *tun, struct tun_file *tfile, if (!zerocopy) { copylen = len; - if (gso.hdr_len > good_linear) + if (__virtio16_to_cpu(false, gso.hdr_len) > good_linear) linear...
2014 Oct 23
0
[PATCH RFC] tun: fix sparse warnings for virtio headers
...struct tun_file *tfile, * enough room for skb expand head in case it is used. * The rest of the buffer is mapped from userspace. */ - copylen = gso.hdr_len ? gso.hdr_len : GOODCOPY_LEN; + copylen = gso.hdr_len ? __virtio16_to_cpu(false, gso.hdr_len) : GOODCOPY_LEN; if (copylen > good_linear) copylen = good_linear; linear = copylen; @@ -1075,10 +1075,10 @@ static ssize_t tun_get_user(struct tun_struct *tun, struct tun_file *tfile, if (!zerocopy) { copylen = len; - if (gso.hdr_len > good_linear) + if (__virtio16_to_cpu(false, gso.hdr_len) > good_linear) linear...
2023 Feb 21
1
[patch net-next] net: virtio_net: implement exact header length guest feature
...bigger than necessary works fine ... > Well yeah. But tap does not do that, does it? it uses hdr_len directly. tap_get_user() limit the head length: static ssize_t tap_get_user(struct tap_queue *q, void *msg_control, ??????????????????????????? struct iov_iter *from, int noblock) { ?? ?int good_linear = SKB_MAX_HEAD(TAP_RESERVE); ... > > >>> I will add this to the patch description and send v2. >>> >> I feel this does not answer the question yet, or maybe I am being dense. >> My point was not about making hdr_len precise. My point was that we are >> m...
2018 Sep 06
1
[PATCH net-next 08/11] tun: switch to new type of msg_control
...P_RESERVE HH_DATA_OFF(ETH_HLEN) > > /* Get packet from user space buffer */ > -static ssize_t tap_get_user(struct tap_queue *q, struct msghdr *m, > +static ssize_t tap_get_user(struct tap_queue *q, void *msg_control, > struct iov_iter *from, int noblock) > { > int good_linear = SKB_MAX_HEAD(TAP_RESERVE); > @@ -663,7 +663,7 @@ static ssize_t tap_get_user(struct tap_queue *q, struct msghdr *m, > if (unlikely(len < ETH_HLEN)) > goto err; > > - if (m && m->msg_control && sock_flag(&q->sk, SOCK_ZEROCOPY)) { > + if (msg_co...
2018 Sep 06
0
[PATCH net-next 08/11] tun: switch to new type of msg_control
...ock *sk, size_t prepad, #define TAP_RESERVE HH_DATA_OFF(ETH_HLEN) /* Get packet from user space buffer */ -static ssize_t tap_get_user(struct tap_queue *q, struct msghdr *m, +static ssize_t tap_get_user(struct tap_queue *q, void *msg_control, struct iov_iter *from, int noblock) { int good_linear = SKB_MAX_HEAD(TAP_RESERVE); @@ -663,7 +663,7 @@ static ssize_t tap_get_user(struct tap_queue *q, struct msghdr *m, if (unlikely(len < ETH_HLEN)) goto err; - if (m && m->msg_control && sock_flag(&q->sk, SOCK_ZEROCOPY)) { + if (msg_control && sock_flag(&am...
2023 Feb 20
2
[patch net-next] net: virtio_net: implement exact header length guest feature
Mon, Feb 20, 2023 at 01:55:33PM CET, mst at redhat.com wrote: >On Mon, Feb 20, 2023 at 09:35:00AM +0100, Jiri Pirko wrote: >> Fri, Feb 17, 2023 at 02:47:36PM CET, mst at redhat.com wrote: >> >On Fri, Feb 17, 2023 at 01:53:55PM +0100, Jiri Pirko wrote: >> >> Fri, Feb 17, 2023 at 01:22:01PM CET, mst at redhat.com wrote: >> >> >On Fri, Feb 17, 2023 at
2018 Sep 06
22
[PATCH net-next 00/11] Vhost_net TX batching
Hi all: This series tries to batch submitting packets to underlayer socket through msg_control during sendmsg(). This is done by: 1) Doing userspace copy inside vhost_net 2) Build XDP buff 3) Batch at most 64 (VHOST_NET_BATCH) XDP buffs and submit them once through msg_control during sendmsg(). 4) Underlayer sockets can use XDP buffs directly when XDP is enalbed, or build skb based on XDP
2018 Sep 12
14
[PATCH net-next V2 00/11] vhost_net TX batching
Hi all: This series tries to batch submitting packets to underlayer socket through msg_control during sendmsg(). This is done by: 1) Doing userspace copy inside vhost_net 2) Build XDP buff 3) Batch at most 64 (VHOST_NET_BATCH) XDP buffs and submit them once through msg_control during sendmsg(). 4) Underlayer sockets can use XDP buffs directly when XDP is enalbed, or build skb based on XDP
2018 Sep 12
14
[PATCH net-next V2 00/11] vhost_net TX batching
Hi all: This series tries to batch submitting packets to underlayer socket through msg_control during sendmsg(). This is done by: 1) Doing userspace copy inside vhost_net 2) Build XDP buff 3) Batch at most 64 (VHOST_NET_BATCH) XDP buffs and submit them once through msg_control during sendmsg(). 4) Underlayer sockets can use XDP buffs directly when XDP is enalbed, or build skb based on XDP