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-rw-r--r--drivers/net/hamradio/baycom_epp.c126
-rw-r--r--drivers/net/pcmcia/3c574_cs.c3
-rw-r--r--drivers/net/r8169.c31
-rw-r--r--drivers/net/shaper.c86
4 files changed, 83 insertions, 163 deletions
diff --git a/drivers/net/hamradio/baycom_epp.c b/drivers/net/hamradio/baycom_epp.c
index 1c563f905a59..a7f15d9f13e5 100644
--- a/drivers/net/hamradio/baycom_epp.c
+++ b/drivers/net/hamradio/baycom_epp.c
@@ -374,29 +374,6 @@ static inline void do_kiss_params(struct baycom_state *bc,
374} 374}
375 375
376/* --------------------------------------------------------------------- */ 376/* --------------------------------------------------------------------- */
377/*
378 * high performance HDLC encoder
379 * yes, it's ugly, but generates pretty good code
380 */
381
382#define ENCODEITERA(j) \
383({ \
384 if (!(notbitstream & (0x1f0 << j))) \
385 goto stuff##j; \
386 encodeend##j: ; \
387})
388
389#define ENCODEITERB(j) \
390({ \
391 stuff##j: \
392 bitstream &= ~(0x100 << j); \
393 bitbuf = (bitbuf & (((2 << j) << numbit) - 1)) | \
394 ((bitbuf & ~(((2 << j) << numbit) - 1)) << 1); \
395 numbit++; \
396 notbitstream = ~bitstream; \
397 goto encodeend##j; \
398})
399
400 377
401static void encode_hdlc(struct baycom_state *bc) 378static void encode_hdlc(struct baycom_state *bc)
402{ 379{
@@ -405,6 +382,7 @@ static void encode_hdlc(struct baycom_state *bc)
405 int pkt_len; 382 int pkt_len;
406 unsigned bitstream, notbitstream, bitbuf, numbit, crc; 383 unsigned bitstream, notbitstream, bitbuf, numbit, crc;
407 unsigned char crcarr[2]; 384 unsigned char crcarr[2];
385 int j;
408 386
409 if (bc->hdlctx.bufcnt > 0) 387 if (bc->hdlctx.bufcnt > 0)
410 return; 388 return;
@@ -429,24 +407,14 @@ static void encode_hdlc(struct baycom_state *bc)
429 pkt_len--; 407 pkt_len--;
430 if (!pkt_len) 408 if (!pkt_len)
431 bp = crcarr; 409 bp = crcarr;
432 ENCODEITERA(0); 410 for (j = 0; j < 8; j++)
433 ENCODEITERA(1); 411 if (unlikely(!(notbitstream & (0x1f0 << j)))) {
434 ENCODEITERA(2); 412 bitstream &= ~(0x100 << j);
435 ENCODEITERA(3); 413 bitbuf = (bitbuf & (((2 << j) << numbit) - 1)) |
436 ENCODEITERA(4); 414 ((bitbuf & ~(((2 << j) << numbit) - 1)) << 1);
437 ENCODEITERA(5); 415 numbit++;
438 ENCODEITERA(6); 416 notbitstream = ~bitstream;
439 ENCODEITERA(7); 417 }
440 goto enditer;
441 ENCODEITERB(0);
442 ENCODEITERB(1);
443 ENCODEITERB(2);
444 ENCODEITERB(3);
445 ENCODEITERB(4);
446 ENCODEITERB(5);
447 ENCODEITERB(6);
448 ENCODEITERB(7);
449 enditer:
450 numbit += 8; 418 numbit += 8;
451 while (numbit >= 8) { 419 while (numbit >= 8) {
452 *wp++ = bitbuf; 420 *wp++ = bitbuf;
@@ -610,37 +578,6 @@ static void do_rxpacket(struct net_device *dev)
610 bc->stats.rx_packets++; 578 bc->stats.rx_packets++;
611} 579}
612 580
613#define DECODEITERA(j) \
614({ \
615 if (!(notbitstream & (0x0fc << j))) /* flag or abort */ \
616 goto flgabrt##j; \
617 if ((bitstream & (0x1f8 << j)) == (0xf8 << j)) /* stuffed bit */ \
618 goto stuff##j; \
619 enditer##j: ; \
620})
621
622#define DECODEITERB(j) \
623({ \
624 flgabrt##j: \
625 if (!(notbitstream & (0x1fc << j))) { /* abort received */ \
626 state = 0; \
627 goto enditer##j; \
628 } \
629 if ((bitstream & (0x1fe << j)) != (0x0fc << j)) /* flag received */ \
630 goto enditer##j; \
631 if (state) \
632 do_rxpacket(dev); \
633 bc->hdlcrx.bufcnt = 0; \
634 bc->hdlcrx.bufptr = bc->hdlcrx.buf; \
635 state = 1; \
636 numbits = 7-j; \
637 goto enditer##j; \
638 stuff##j: \
639 numbits--; \
640 bitbuf = (bitbuf & ((~0xff) << j)) | ((bitbuf & ~((~0xff) << j)) << 1); \
641 goto enditer##j; \
642})
643
644static int receive(struct net_device *dev, int cnt) 581static int receive(struct net_device *dev, int cnt)
645{ 582{
646 struct baycom_state *bc = netdev_priv(dev); 583 struct baycom_state *bc = netdev_priv(dev);
@@ -649,6 +586,7 @@ static int receive(struct net_device *dev, int cnt)
649 unsigned char tmp[128]; 586 unsigned char tmp[128];
650 unsigned char *cp; 587 unsigned char *cp;
651 int cnt2, ret = 0; 588 int cnt2, ret = 0;
589 int j;
652 590
653 numbits = bc->hdlcrx.numbits; 591 numbits = bc->hdlcrx.numbits;
654 state = bc->hdlcrx.state; 592 state = bc->hdlcrx.state;
@@ -669,24 +607,32 @@ static int receive(struct net_device *dev, int cnt)
669 bitbuf |= (*cp) << 8; 607 bitbuf |= (*cp) << 8;
670 numbits += 8; 608 numbits += 8;
671 notbitstream = ~bitstream; 609 notbitstream = ~bitstream;
672 DECODEITERA(0); 610 for (j = 0; j < 8; j++) {
673 DECODEITERA(1); 611
674 DECODEITERA(2); 612 /* flag or abort */
675 DECODEITERA(3); 613 if (unlikely(!(notbitstream & (0x0fc << j)))) {
676 DECODEITERA(4); 614
677 DECODEITERA(5); 615 /* abort received */
678 DECODEITERA(6); 616 if (!(notbitstream & (0x1fc << j)))
679 DECODEITERA(7); 617 state = 0;
680 goto enddec; 618
681 DECODEITERB(0); 619 /* not flag received */
682 DECODEITERB(1); 620 else if (!(bitstream & (0x1fe << j)) != (0x0fc << j)) {
683 DECODEITERB(2); 621 if (state)
684 DECODEITERB(3); 622 do_rxpacket(dev);
685 DECODEITERB(4); 623 bc->hdlcrx.bufcnt = 0;
686 DECODEITERB(5); 624 bc->hdlcrx.bufptr = bc->hdlcrx.buf;
687 DECODEITERB(6); 625 state = 1;
688 DECODEITERB(7); 626 numbits = 7-j;
689 enddec: 627 }
628 }
629
630 /* stuffed bit */
631 else if (unlikely((bitstream & (0x1f8 << j)) == (0xf8 << j))) {
632 numbits--;
633 bitbuf = (bitbuf & ((~0xff) << j)) | ((bitbuf & ~((~0xff) << j)) << 1);
634 }
635 }
690 while (state && numbits >= 8) { 636 while (state && numbits >= 8) {
691 if (bc->hdlcrx.bufcnt >= TXBUFFER_SIZE) { 637 if (bc->hdlcrx.bufcnt >= TXBUFFER_SIZE) {
692 state = 0; 638 state = 0;
diff --git a/drivers/net/pcmcia/3c574_cs.c b/drivers/net/pcmcia/3c574_cs.c
index 41e517114807..c6e8b25f9685 100644
--- a/drivers/net/pcmcia/3c574_cs.c
+++ b/drivers/net/pcmcia/3c574_cs.c
@@ -1274,6 +1274,9 @@ static int el3_close(struct net_device *dev)
1274 spin_lock_irqsave(&lp->window_lock, flags); 1274 spin_lock_irqsave(&lp->window_lock, flags);
1275 update_stats(dev); 1275 update_stats(dev);
1276 spin_unlock_irqrestore(&lp->window_lock, flags); 1276 spin_unlock_irqrestore(&lp->window_lock, flags);
1277
1278 /* force interrupts off */
1279 outw(SetIntrEnb | 0x0000, ioaddr + EL3_CMD);
1277 } 1280 }
1278 1281
1279 link->open--; 1282 link->open--;
diff --git a/drivers/net/r8169.c b/drivers/net/r8169.c
index c59507f8a76b..b3768d844747 100644
--- a/drivers/net/r8169.c
+++ b/drivers/net/r8169.c
@@ -1585,8 +1585,8 @@ rtl8169_hw_start(struct net_device *dev)
1585 RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb); 1585 RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
1586 RTL_W8(EarlyTxThres, EarlyTxThld); 1586 RTL_W8(EarlyTxThres, EarlyTxThld);
1587 1587
1588 /* For gigabit rtl8169, MTU + header + CRC + VLAN */ 1588 /* Low hurts. Let's disable the filtering. */
1589 RTL_W16(RxMaxSize, tp->rx_buf_sz); 1589 RTL_W16(RxMaxSize, 16383);
1590 1590
1591 /* Set Rx Config register */ 1591 /* Set Rx Config register */
1592 i = rtl8169_rx_config | 1592 i = rtl8169_rx_config |
@@ -2127,6 +2127,11 @@ rtl8169_tx_interrupt(struct net_device *dev, struct rtl8169_private *tp,
2127 } 2127 }
2128} 2128}
2129 2129
2130static inline int rtl8169_fragmented_frame(u32 status)
2131{
2132 return (status & (FirstFrag | LastFrag)) != (FirstFrag | LastFrag);
2133}
2134
2130static inline void rtl8169_rx_csum(struct sk_buff *skb, struct RxDesc *desc) 2135static inline void rtl8169_rx_csum(struct sk_buff *skb, struct RxDesc *desc)
2131{ 2136{
2132 u32 opts1 = le32_to_cpu(desc->opts1); 2137 u32 opts1 = le32_to_cpu(desc->opts1);
@@ -2177,27 +2182,41 @@ rtl8169_rx_interrupt(struct net_device *dev, struct rtl8169_private *tp,
2177 2182
2178 while (rx_left > 0) { 2183 while (rx_left > 0) {
2179 unsigned int entry = cur_rx % NUM_RX_DESC; 2184 unsigned int entry = cur_rx % NUM_RX_DESC;
2185 struct RxDesc *desc = tp->RxDescArray + entry;
2180 u32 status; 2186 u32 status;
2181 2187
2182 rmb(); 2188 rmb();
2183 status = le32_to_cpu(tp->RxDescArray[entry].opts1); 2189 status = le32_to_cpu(desc->opts1);
2184 2190
2185 if (status & DescOwn) 2191 if (status & DescOwn)
2186 break; 2192 break;
2187 if (status & RxRES) { 2193 if (status & RxRES) {
2188 printk(KERN_INFO "%s: Rx ERROR!!!\n", dev->name); 2194 printk(KERN_INFO "%s: Rx ERROR. status = %08x\n",
2195 dev->name, status);
2189 tp->stats.rx_errors++; 2196 tp->stats.rx_errors++;
2190 if (status & (RxRWT | RxRUNT)) 2197 if (status & (RxRWT | RxRUNT))
2191 tp->stats.rx_length_errors++; 2198 tp->stats.rx_length_errors++;
2192 if (status & RxCRC) 2199 if (status & RxCRC)
2193 tp->stats.rx_crc_errors++; 2200 tp->stats.rx_crc_errors++;
2201 rtl8169_mark_to_asic(desc, tp->rx_buf_sz);
2194 } else { 2202 } else {
2195 struct RxDesc *desc = tp->RxDescArray + entry;
2196 struct sk_buff *skb = tp->Rx_skbuff[entry]; 2203 struct sk_buff *skb = tp->Rx_skbuff[entry];
2197 int pkt_size = (status & 0x00001FFF) - 4; 2204 int pkt_size = (status & 0x00001FFF) - 4;
2198 void (*pci_action)(struct pci_dev *, dma_addr_t, 2205 void (*pci_action)(struct pci_dev *, dma_addr_t,
2199 size_t, int) = pci_dma_sync_single_for_device; 2206 size_t, int) = pci_dma_sync_single_for_device;
2200 2207
2208 /*
2209 * The driver does not support incoming fragmented
2210 * frames. They are seen as a symptom of over-mtu
2211 * sized frames.
2212 */
2213 if (unlikely(rtl8169_fragmented_frame(status))) {
2214 tp->stats.rx_dropped++;
2215 tp->stats.rx_length_errors++;
2216 rtl8169_mark_to_asic(desc, tp->rx_buf_sz);
2217 goto move_on;
2218 }
2219
2201 rtl8169_rx_csum(skb, desc); 2220 rtl8169_rx_csum(skb, desc);
2202 2221
2203 pci_dma_sync_single_for_cpu(tp->pci_dev, 2222 pci_dma_sync_single_for_cpu(tp->pci_dev,
@@ -2224,7 +2243,7 @@ rtl8169_rx_interrupt(struct net_device *dev, struct rtl8169_private *tp,
2224 tp->stats.rx_bytes += pkt_size; 2243 tp->stats.rx_bytes += pkt_size;
2225 tp->stats.rx_packets++; 2244 tp->stats.rx_packets++;
2226 } 2245 }
2227 2246move_on:
2228 cur_rx++; 2247 cur_rx++;
2229 rx_left--; 2248 rx_left--;
2230 } 2249 }
diff --git a/drivers/net/shaper.c b/drivers/net/shaper.c
index e68cf5fb4920..20edeb345792 100644
--- a/drivers/net/shaper.c
+++ b/drivers/net/shaper.c
@@ -100,35 +100,8 @@ static int sh_debug; /* Debug flag */
100 100
101#define SHAPER_BANNER "CymruNet Traffic Shaper BETA 0.04 for Linux 2.1\n" 101#define SHAPER_BANNER "CymruNet Traffic Shaper BETA 0.04 for Linux 2.1\n"
102 102
103/*
104 * Locking
105 */
106
107static int shaper_lock(struct shaper *sh)
108{
109 /*
110 * Lock in an interrupt must fail
111 */
112 while (test_and_set_bit(0, &sh->locked))
113 {
114 if (!in_interrupt())
115 sleep_on(&sh->wait_queue);
116 else
117 return 0;
118
119 }
120 return 1;
121}
122
123static void shaper_kick(struct shaper *sh); 103static void shaper_kick(struct shaper *sh);
124 104
125static void shaper_unlock(struct shaper *sh)
126{
127 clear_bit(0, &sh->locked);
128 wake_up(&sh->wait_queue);
129 shaper_kick(sh);
130}
131
132/* 105/*
133 * Compute clocks on a buffer 106 * Compute clocks on a buffer
134 */ 107 */
@@ -157,17 +130,15 @@ static void shaper_setspeed(struct shaper *shaper, int bitspersec)
157 * Throw a frame at a shaper. 130 * Throw a frame at a shaper.
158 */ 131 */
159 132
160static int shaper_qframe(struct shaper *shaper, struct sk_buff *skb) 133
134static int shaper_start_xmit(struct sk_buff *skb, struct net_device *dev)
161{ 135{
136 struct shaper *shaper = dev->priv;
162 struct sk_buff *ptr; 137 struct sk_buff *ptr;
163 138
164 /* 139 if (down_trylock(&shaper->sem))
165 * Get ready to work on this shaper. Lock may fail if its 140 return -1;
166 * an interrupt and locked. 141
167 */
168
169 if(!shaper_lock(shaper))
170 return -1;
171 ptr=shaper->sendq.prev; 142 ptr=shaper->sendq.prev;
172 143
173 /* 144 /*
@@ -260,7 +231,8 @@ static int shaper_qframe(struct shaper *shaper, struct sk_buff *skb)
260 dev_kfree_skb(ptr); 231 dev_kfree_skb(ptr);
261 shaper->stats.collisions++; 232 shaper->stats.collisions++;
262 } 233 }
263 shaper_unlock(shaper); 234 shaper_kick(shaper);
235 up(&shaper->sem);
264 return 0; 236 return 0;
265} 237}
266 238
@@ -297,8 +269,13 @@ static void shaper_queue_xmit(struct shaper *shaper, struct sk_buff *skb)
297 269
298static void shaper_timer(unsigned long data) 270static void shaper_timer(unsigned long data)
299{ 271{
300 struct shaper *sh=(struct shaper *)data; 272 struct shaper *shaper = (struct shaper *)data;
301 shaper_kick(sh); 273
274 if (!down_trylock(&shaper->sem)) {
275 shaper_kick(shaper);
276 up(&shaper->sem);
277 } else
278 mod_timer(&shaper->timer, jiffies);
302} 279}
303 280
304/* 281/*
@@ -311,19 +288,6 @@ static void shaper_kick(struct shaper *shaper)
311 struct sk_buff *skb; 288 struct sk_buff *skb;
312 289
313 /* 290 /*
314 * Shaper unlock will kick
315 */
316
317 if (test_and_set_bit(0, &shaper->locked))
318 {
319 if(sh_debug)
320 printk("Shaper locked.\n");
321 mod_timer(&shaper->timer, jiffies);
322 return;
323 }
324
325
326 /*
327 * Walk the list (may be empty) 291 * Walk the list (may be empty)
328 */ 292 */
329 293
@@ -364,8 +328,6 @@ static void shaper_kick(struct shaper *shaper)
364 328
365 if(skb!=NULL) 329 if(skb!=NULL)
366 mod_timer(&shaper->timer, SHAPERCB(skb)->shapeclock); 330 mod_timer(&shaper->timer, SHAPERCB(skb)->shapeclock);
367
368 clear_bit(0, &shaper->locked);
369} 331}
370 332
371 333
@@ -376,14 +338,12 @@ static void shaper_kick(struct shaper *shaper)
376static void shaper_flush(struct shaper *shaper) 338static void shaper_flush(struct shaper *shaper)
377{ 339{
378 struct sk_buff *skb; 340 struct sk_buff *skb;
379 if(!shaper_lock(shaper)) 341
380 { 342 down(&shaper->sem);
381 printk(KERN_ERR "shaper: shaper_flush() called by an irq!\n");
382 return;
383 }
384 while((skb=skb_dequeue(&shaper->sendq))!=NULL) 343 while((skb=skb_dequeue(&shaper->sendq))!=NULL)
385 dev_kfree_skb(skb); 344 dev_kfree_skb(skb);
386 shaper_unlock(shaper); 345 shaper_kick(shaper);
346 up(&shaper->sem);
387} 347}
388 348
389/* 349/*
@@ -426,13 +386,6 @@ static int shaper_close(struct net_device *dev)
426 * ARP and other resolutions and not before. 386 * ARP and other resolutions and not before.
427 */ 387 */
428 388
429
430static int shaper_start_xmit(struct sk_buff *skb, struct net_device *dev)
431{
432 struct shaper *sh=dev->priv;
433 return shaper_qframe(sh, skb);
434}
435
436static struct net_device_stats *shaper_get_stats(struct net_device *dev) 389static struct net_device_stats *shaper_get_stats(struct net_device *dev)
437{ 390{
438 struct shaper *sh=dev->priv; 391 struct shaper *sh=dev->priv;
@@ -623,7 +576,6 @@ static void shaper_init_priv(struct net_device *dev)
623 init_timer(&sh->timer); 576 init_timer(&sh->timer);
624 sh->timer.function=shaper_timer; 577 sh->timer.function=shaper_timer;
625 sh->timer.data=(unsigned long)sh; 578 sh->timer.data=(unsigned long)sh;
626 init_waitqueue_head(&sh->wait_queue);
627} 579}
628 580
629/* 581/*
generated by cgit v1.2.2 (git 2.25.0) at 2025-10-02 08:58:30 -0400