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kernel: do preparation work for copyless read/write

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Matheus
2024-09-18 21:17:37 -03:00
parent 1140244816
commit 611f13b562
12 changed files with 134 additions and 47 deletions
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kernel-src/io/net/localsocket.c
+14
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@@ -365,6 +365,11 @@ static int localsock_send(socket_t *socket, sockdesc_t *sockdesc) {
}
sockdesc->donecount = ringbuffer_write(&peer->ringbuffer, sockdesc->buffer, sockdesc->count);
if (sockdesc->donecount == RINGBUFFER_USER_COPY_FAILED) {
error = EFAULT;
goto leave;
}
__assert(sockdesc->donecount > 0);
error = sendctrl(socket, sockdesc->ctrl, sockdesc->ctrllen, sockdesc->donecount);
@@ -465,8 +470,17 @@ static int localsock_recv(socket_t *socket, sockdesc_t *sockdesc) {
if (flags & SOCKET_RECV_FLAGS_PEEK) {
sockdesc->donecount = ringbuffer_peek(&localsocket->ringbuffer, sockdesc->buffer, 0, recvcount);
if (sockdesc->donecount == RINGBUFFER_USER_COPY_FAILED) {
error = EFAULT;
goto leave;
}
} else {
sockdesc->donecount = ringbuffer_read(&localsocket->ringbuffer, sockdesc->buffer, recvcount);
if (sockdesc->donecount == RINGBUFFER_USER_COPY_FAILED) {
error = EPIPE;
goto leave;
}
localsocket_t *peer = pair->client == localsocket ? pair->server : pair->client;
// signal that there is space to write for any threads blocked on this socket
if (peer && sockdesc->donecount)