cregit-Linux how code gets into the kernel

Release 4.8 net/rose/rose_out.c

Directory: net/rose
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 * Copyright (C) Jonathan Naylor G4KLX (
#include <linux/errno.h>
#include <linux/types.h>
#include <linux/socket.h>
#include <linux/in.h>
#include <linux/kernel.h>
#include <linux/timer.h>
#include <linux/string.h>
#include <linux/sockios.h>
#include <linux/net.h>
#include <linux/gfp.h>
#include <net/ax25.h>
#include <linux/inet.h>
#include <linux/netdevice.h>
#include <linux/skbuff.h>
#include <net/sock.h>
#include <linux/fcntl.h>
#include <linux/mm.h>
#include <linux/interrupt.h>
#include <net/rose.h>

 *      This procedure is passed a buffer descriptor for an iframe. It builds
 *      the rest of the control part of the frame and then writes it out.

static void rose_send_iframe(struct sock *sk, struct sk_buff *skb) { struct rose_sock *rose = rose_sk(sk); if (skb == NULL) return; skb->data[2] |= (rose->vr << 5) & 0xE0; skb->data[2] |= (rose->vs << 1) & 0x0E; rose_start_idletimer(sk); rose_transmit_link(skb, rose->neighbour); }


david s. millerdavid s. miller89.88%125.00%
ralf baechleralf baechle22.47%125.00%

void rose_kick(struct sock *sk) { struct rose_sock *rose = rose_sk(sk); struct sk_buff *skb, *skbn; unsigned short start, end; if (rose->state != ROSE_STATE_3) return; if (rose->condition & ROSE_COND_PEER_RX_BUSY) return; if (!skb_peek(&sk->sk_write_queue)) return; start = (skb_peek(&rose->ack_queue) == NULL) ? rose->va : rose->vs; end = (rose->va + sysctl_rose_window_size) % ROSE_MODULUS; if (start == end) return; rose->vs = start; /* * Transmit data until either we're out of data to send or * the window is full. */ skb = skb_dequeue(&sk->sk_write_queue); do { if ((skbn = skb_clone(skb, GFP_ATOMIC)) == NULL) { skb_queue_head(&sk->sk_write_queue, skb); break; } skb_set_owner_w(skbn, sk); /* * Transmit the frame copy. */ rose_send_iframe(sk, skbn); rose->vs = (rose->vs + 1) % ROSE_MODULUS; /* * Requeue the original data frame. */ skb_queue_tail(&rose->ack_queue, skb); } while (rose->vs != end && (skb = skb_dequeue(&sk->sk_write_queue)) != NULL); rose->vl = rose->vr; rose->condition &= ~ROSE_COND_ACK_PENDING; rose_stop_timer(sk); }


david s. millerdavid s. miller83.39%111.11%
arnaldo carvalho de meloarnaldo carvalho de melo52.12%111.11%
ralf baechleralf baechle20.85%111.11%

/* * The following routines are taken from page 170 of the 7th ARRL Computer * Networking Conference paper, as is the whole state machine. */
void rose_enquiry_response(struct sock *sk) { struct rose_sock *rose = rose_sk(sk); if (rose->condition & ROSE_COND_OWN_RX_BUSY) rose_write_internal(sk, ROSE_RNR); else rose_write_internal(sk, ROSE_RR); rose->vl = rose->vr; rose->condition &= ~ROSE_COND_ACK_PENDING; rose_stop_timer(sk); }


david s. millerdavid s. miller812.70%116.67%
ralf baechleralf baechle23.17%116.67%

Overall Contributors

david s. millerdavid s. miller245.45%19.09%
ralf baechleralf baechle81.82%218.18%
arnaldo carvalho de meloarnaldo carvalho de melo51.14%19.09%
tejun heotejun heo30.68%19.09%
Directory: net/rose
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