| /Linux-v5.4/drivers/usb/mtu3/ |
| D | mtu3_gadget.c | 15 __releases(mep->mtu->lock) in mtu3_req_complete()
16 __acquires(mep->mtu->lock) in mtu3_req_complete()
19 struct mtu3 *mtu; in mtu3_req_complete() local
27 mtu = mreq->mtu; in mtu3_req_complete()
31 spin_unlock(&mtu->lock); in mtu3_req_complete()
35 usb_gadget_unmap_request(&mtu->g, req, mep->is_in); in mtu3_req_complete()
37 dev_dbg(mtu->dev, "%s complete req: %p, sts %d, %d/%d\n", mep->name, in mtu3_req_complete()
42 spin_lock(&mtu->lock); in mtu3_req_complete()
54 dev_dbg(mep->mtu->dev, "abort %s's req: sts %d\n", mep->name, status); in nuke()
71 struct mtu3 *mtu = mep->mtu; in mtu3_ep_enable() local
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| D | mtu3_gadget_ep0.c | 18 #define next_ep0_request(mtu) next_request((mtu)->ep0) argument
39 static char *decode_ep0_state(struct mtu3 *mtu) in decode_ep0_state() argument
41 switch (mtu->ep0_state) { in decode_ep0_state()
57 static void ep0_req_giveback(struct mtu3 *mtu, struct usb_request *req) in ep0_req_giveback() argument
59 mtu3_req_complete(mtu->ep0, req, 0); in ep0_req_giveback()
63 forward_to_driver(struct mtu3 *mtu, const struct usb_ctrlrequest *setup) in forward_to_driver() argument
64 __releases(mtu->lock) in forward_to_driver()
65 __acquires(mtu->lock) in forward_to_driver()
69 if (!mtu->gadget_driver) in forward_to_driver()
72 spin_unlock(&mtu->lock); in forward_to_driver()
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| D | mtu3_core.c | 45 dev_dbg(mep->mtu->dev, "%s fifo:%#x/%#x, start_bit: %d\n", in ep_fifo_alloc()
66 dev_dbg(mep->mtu->dev, "%s size:%#x/%#x, start_bit: %d\n", in ep_fifo_free()
71 static inline void mtu3_ss_func_set(struct mtu3 *mtu, bool enable) in mtu3_ss_func_set() argument
75 mtu3_setbits(mtu->mac_base, U3D_USB3_CONFIG, USB3_EN); in mtu3_ss_func_set()
77 mtu3_clrbits(mtu->mac_base, U3D_USB3_CONFIG, USB3_EN); in mtu3_ss_func_set()
79 dev_dbg(mtu->dev, "USB3_EN = %d\n", !!enable); in mtu3_ss_func_set()
83 static inline void mtu3_hs_softconn_set(struct mtu3 *mtu, bool enable) in mtu3_hs_softconn_set() argument
86 mtu3_setbits(mtu->mac_base, U3D_POWER_MANAGEMENT, in mtu3_hs_softconn_set()
89 mtu3_clrbits(mtu->mac_base, U3D_POWER_MANAGEMENT, in mtu3_hs_softconn_set()
92 dev_dbg(mtu->dev, "SOFTCONN = %d\n", !!enable); in mtu3_hs_softconn_set()
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| D | mtu3_qmu.c | 38 #define GPD_RX_BUF_LEN(mtu, x) \ argument
41 ((mtu)->gen2cp) ? GPD_RX_BUF_LEN_EL(x_) : GPD_RX_BUF_LEN_OG(x_); \
46 #define GPD_DATA_LEN(mtu, x) \ argument
49 ((mtu)->gen2cp) ? GPD_DATA_LEN_EL(x_) : GPD_DATA_LEN_OG(x_); \
57 #define GPD_EXT_NGP(mtu, x) \ argument
60 ((mtu)->gen2cp) ? GPD_EXT_NGP_EL(x_) : GPD_EXT_NGP_OG(x_); \
63 #define GPD_EXT_BUF(mtu, x) \ argument
66 ((mtu)->gen2cp) ? GPD_EXT_BUF_EL(x_) : GPD_EXT_BUF_OG(x_); \
171 gpd = dma_pool_zalloc(mep->mtu->qmu_gpd_pool, GFP_ATOMIC, &ring->dma); in mtu3_gpd_ring_alloc()
184 dma_pool_free(mep->mtu->qmu_gpd_pool, in mtu3_gpd_ring_free()
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| D | mtu3_debugfs.c | 80 struct mtu3 *mtu = sf->private; in mtu3_link_state_show() local
81 void __iomem *mbase = mtu->mac_base; in mtu3_link_state_show()
92 struct mtu3 *mtu = sf->private; in mtu3_ep_used_show() local
98 spin_lock_irqsave(&mtu->lock, flags); in mtu3_ep_used_show()
100 for (i = 0; i < mtu->num_eps; i++) { in mtu3_ep_used_show()
101 mep = mtu->in_eps + i; in mtu3_ep_used_show()
107 mep = mtu->out_eps + i; in mtu3_ep_used_show()
115 spin_unlock_irqrestore(&mtu->lock, flags); in mtu3_ep_used_show()
123 static void mtu3_debugfs_regset(struct mtu3 *mtu, void __iomem *base, in mtu3_debugfs_regset() argument
130 mregs = devm_kzalloc(mtu->dev, sizeof(*regset), GFP_KERNEL); in mtu3_debugfs_regset()
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| /Linux-v5.4/tools/testing/selftests/net/ |
| D | pmtu.sh | 4 # Check that route PMTU values match expectations, and that initial device MTU
20 # decrease and increase the MTU of the local link for one of the paths,
32 # set a MTU lower than the VXLAN MTU and the MTU on the link between A and
33 # R1. Send IPv4 packets, exceeding the MTU between R1 and B, over VXLAN
73 # created if link layer MTU is not exceeded, then exceed it and check that
75 # below for IPv6 doesn't apply here, because, on IPv4, administrative MTU
81 # created by exceeding link layer MTU with ping to other endpoint. Then
82 # decrease and increase MTU of tunnel, checking that route exception PMTU
87 # endpoints. Check that MTU assigned to vti interface is the MTU of the
95 # Set up vti4 interface passing MTU value at link creation, check MTU is
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| D | fib_nexthop_multiprefix.sh | 156 local mtu=$2
158 run_cmd ip -netns h${hostid} li set eth0 mtu ${mtu}
159 run_cmd ip -netns r1 li set eth${hostid} mtu ${mtu}
168 local mtu=$2
183 echo " cache .* mtu ${mtu}"
188 grep -q "cache .* mtu ${mtu}"
191 log_test $rc 0 "IPv4: host 0 to host ${i}, mtu ${mtu}"
197 local mtu=$2
212 echo " ${dst} from :: via ${r1} dev eth0 src ${h0} .* mtu ${mtu}"
217 grep -q "${dst} from :: via ${r1} dev eth0 src ${h0} .* mtu ${mtu}"
[all …]
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| D | icmp_redirect.sh | 273 local mtu=$1
275 run_cmd ip -netns h2 li set eth0 mtu ${mtu}
276 run_cmd ip -netns r2 li set eth2 mtu ${mtu}
281 local mtu="$1"
292 if [ -n "${mtu}" ]; then
293 mtu=" mtu ${mtu}"
297 grep -q "cache <redirected> expires [0-9]*sec${mtu}"
298 elif [ -n "${mtu}" ]; then
300 grep -q "cache expires [0-9]*sec${mtu}"
302 # want to verify that neither mtu nor redirected appears in
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| D | udpgso.c | 286 error(1, errno, "ioctl get mtu"); in get_device_mtu()
291 static void __set_device_mtu(int fd, const char *ifname, unsigned int mtu) in __set_device_mtu() argument
297 ifr.ifr_mtu = mtu; in __set_device_mtu()
301 error(1, errno, "ioctl set mtu"); in __set_device_mtu()
304 static void set_device_mtu(int fd, int mtu) in set_device_mtu() argument
309 fprintf(stderr, "device mtu (orig): %u\n", val); in set_device_mtu()
311 __set_device_mtu(fd, cfg_ifname, mtu); in set_device_mtu()
313 if (val != mtu) in set_device_mtu()
314 error(1, 0, "unable to set device mtu to %u\n", val); in set_device_mtu()
316 fprintf(stderr, "device mtu (test): %u\n", val); in set_device_mtu()
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| D | psock_snd.sh | 8 readonly mtu=1500
15 readonly mss="$((${mtu} - ${iphlen} - ${udphlen}))"
57 echo "raw mtu size"
60 echo "raw mtu size + 1 (fails)"
65 # echo "raw vlan mtu size"
68 echo "raw vlan mtu size + 1 (fails)"
71 echo "dgram mtu size"
74 echo "dgram mtu size + 1 (fails)"
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| /Linux-v5.4/drivers/clocksource/ |
| D | sh_mtu2.c | 29 struct sh_mtu2_device *mtu; member
157 return ioread8(ch->mtu->mapbase + 0x280); in sh_mtu2_read()
173 return iowrite8(value, ch->mtu->mapbase + 0x280); in sh_mtu2_write()
188 raw_spin_lock_irqsave(&ch->mtu->lock, flags); in sh_mtu2_start_stop_ch()
197 raw_spin_unlock_irqrestore(&ch->mtu->lock, flags); in sh_mtu2_start_stop_ch()
206 pm_runtime_get_sync(&ch->mtu->pdev->dev); in sh_mtu2_enable()
207 dev_pm_syscore_device(&ch->mtu->pdev->dev, true); in sh_mtu2_enable()
210 ret = clk_enable(ch->mtu->clk); in sh_mtu2_enable()
212 dev_err(&ch->mtu->pdev->dev, "ch%u: cannot enable clock\n", in sh_mtu2_enable()
220 rate = clk_get_rate(ch->mtu->clk) / 64; in sh_mtu2_enable()
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| /Linux-v5.4/net/ipv6/ |
| D | xfrm6_output.c | 43 static void xfrm6_local_rxpmtu(struct sk_buff *skb, u32 mtu) in xfrm6_local_rxpmtu() argument
51 ipv6_local_rxpmtu(sk, &fl6, mtu); in xfrm6_local_rxpmtu()
54 void xfrm6_local_error(struct sk_buff *skb, u32 mtu) in xfrm6_local_error() argument
64 ipv6_local_error(sk, EMSGSIZE, &fl6, mtu); in xfrm6_local_error()
69 int mtu, ret = 0; in xfrm6_tunnel_check_size() local
75 mtu = dst_mtu(dst); in xfrm6_tunnel_check_size()
76 if (mtu < IPV6_MIN_MTU) in xfrm6_tunnel_check_size()
77 mtu = IPV6_MIN_MTU; in xfrm6_tunnel_check_size()
79 if ((!skb_is_gso(skb) && skb->len > mtu) || in xfrm6_tunnel_check_size()
86 xfrm6_local_rxpmtu(skb, mtu); in xfrm6_tunnel_check_size()
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| D | ip6_output.c | 207 u32 mtu; in ip6_xmit() local
264 mtu = dst_mtu(dst); in ip6_xmit()
265 if ((skb->len <= mtu) || skb->ignore_df || skb_is_gso(skb)) { in ip6_xmit()
288 ipv6_local_error((struct sock *)sk, EMSGSIZE, fl6, mtu); in ip6_xmit()
402 static bool ip6_pkt_too_big(const struct sk_buff *skb, unsigned int mtu) in ip6_pkt_too_big() argument
404 if (skb->len <= mtu) in ip6_pkt_too_big()
408 if (IP6CB(skb)->frag_max_size && IP6CB(skb)->frag_max_size > mtu) in ip6_pkt_too_big()
414 if (skb_is_gso(skb) && skb_gso_validate_network_len(skb, mtu)) in ip6_pkt_too_big()
427 u32 mtu; in ip6_forward() local
541 mtu = ip6_dst_mtu_forward(dst); in ip6_forward()
[all …]
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| D | netfilter.c | 125 unsigned int mtu, hlen; in br_ip6_fragment() local
135 mtu = skb->dev->mtu; in br_ip6_fragment()
136 if (frag_max_size > mtu || in br_ip6_fragment()
140 mtu = frag_max_size; in br_ip6_fragment()
141 if (mtu < hlen + sizeof(struct frag_hdr) + 8) in br_ip6_fragment()
143 mtu -= hlen + sizeof(struct frag_hdr); in br_ip6_fragment()
158 if (first_len - hlen > mtu || in br_ip6_fragment()
166 if (frag2->len > mtu || in br_ip6_fragment()
207 ip6_frag_init(skb, hlen, mtu, skb->dev->needed_tailroom, in br_ip6_fragment()
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| /Linux-v5.4/net/rxrpc/ |
| D | peer_event.c | 105 * Handle an MTU/fragmentation problem.
109 u32 mtu = serr->ee.ee_info; in rxrpc_adjust_mtu() local
111 _net("Rx ICMP Fragmentation Needed (%d)", mtu); in rxrpc_adjust_mtu()
113 /* wind down the local interface MTU */ in rxrpc_adjust_mtu()
114 if (mtu > 0 && peer->if_mtu == 65535 && mtu < peer->if_mtu) { in rxrpc_adjust_mtu()
115 peer->if_mtu = mtu; in rxrpc_adjust_mtu()
116 _net("I/F MTU %u", mtu); in rxrpc_adjust_mtu()
119 if (mtu == 0) { in rxrpc_adjust_mtu()
121 mtu = peer->if_mtu; in rxrpc_adjust_mtu()
122 if (mtu > 1500) { in rxrpc_adjust_mtu()
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| /Linux-v5.4/drivers/infiniband/sw/rxe/ |
| D | rxe_param.h | 37 static inline enum ib_mtu rxe_mtu_int_to_enum(int mtu) in rxe_mtu_int_to_enum() argument
39 if (mtu < 256) in rxe_mtu_int_to_enum()
41 else if (mtu < 512) in rxe_mtu_int_to_enum()
43 else if (mtu < 1024) in rxe_mtu_int_to_enum()
45 else if (mtu < 2048) in rxe_mtu_int_to_enum()
47 else if (mtu < 4096) in rxe_mtu_int_to_enum()
53 /* Find the IB mtu for a given network MTU. */
54 static inline enum ib_mtu eth_mtu_int_to_enum(int mtu) in eth_mtu_int_to_enum() argument
56 mtu -= RXE_MAX_HDR_LENGTH; in eth_mtu_int_to_enum()
58 return rxe_mtu_int_to_enum(mtu); in eth_mtu_int_to_enum()
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| /Linux-v5.4/Documentation/networking/ |
| D | netdevices.txt | 16 (example: rmmod mydriver </sys/class/net/myeth/mtu )
23 MTU
25 Each network device has a Maximum Transfer Unit. The MTU does not
28 than the mtu. The MTU does not include link layer header overhead, so
29 for example on Ethernet if the standard MTU is 1500 bytes used, the
36 packets based on the current MTU.
38 MTU is symmetrical and applies both to receive and transmit. A device
40 the MTU. A network device may use the MTU as mechanism to size receive
42 standard Ethernet mtu of 1500 bytes, the device should allow up to
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| /Linux-v5.4/tools/testing/selftests/net/forwarding/ |
| D | ipip_lib.sh | 320 local mtu=$1
322 ip link set mtu $mtu dev $h1
323 ip link set mtu $mtu dev $ol1
324 ip link set mtu $mtu dev g1a
325 ip link set mtu $mtu dev $ul1
326 ip link set mtu $mtu dev $ul1.111
327 ip link set mtu $mtu dev $h2
328 ip link set mtu $mtu dev $ol2
329 ip link set mtu $mtu dev g2a
330 ip link set mtu $mtu dev $ul2
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| /Linux-v5.4/tools/testing/selftests/tc-testing/tc-tests/actions/ |
| D | police.json | 53 "name": "Add valid police action with mtu",
66 "cmdUnderTest": "$TC actions add action police rate 90kbit burst 10k mtu 1k index 98",
69 "matchPattern": "action order [0-9]*: police 0x62 rate 90Kbit burst 10Kb mtu 1Kb",
90 …"cmdUnderTest": "$TC actions add action police rate 90kbit burst 10k mtu 2kb peakrate 100kbit inde…
93 …"matchPattern": "action order [0-9]*: police 0x3 rate 90Kbit burst 10Kb mtu 2Kb peakrate 100Kbit",
101 "name": "Add police action with peakrate and no mtu",
141 …"matchPattern": "action order [0-9]*: police 0x40 rate 1Mbit burst 100Kb mtu 2Kb action reclassif…
165 …"matchPattern": "action order [0-9]*: police 0x8 rate 2Mbit burst 200Kb mtu 2Kb action reclassify…
189 …"matchPattern": "action order [0-9]*: police 0x8 rate 2Mbit burst 200Kb mtu 2Kb action reclassify…
213 …"matchPattern": "action order [0-9]*: police 0x1 rate 3Mbit burst 250Kb mtu 2Kb action continue/d…
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| /Linux-v5.4/net/caif/ |
| D | chnl_net.c | 24 /* GPRS PDP connection has MTU to 1500 */
223 if (skb->len > priv->netdev->mtu) { in chnl_net_start_xmit()
224 pr_warn("Size of skb exceeded MTU\n"); in chnl_net_start_xmit()
263 int llifindex, headroom, tailroom, mtu; in chnl_net_open() local
298 * MTU, head-room etc is not know before we have a in chnl_net_open()
299 * CAIF link layer device available. MTU calculation may in chnl_net_open()
301 * MTU is minimum of current mtu, link layer mtu pluss in chnl_net_open()
302 * CAIF head and tail, and PDP GPRS contexts max MTU. in chnl_net_open()
304 mtu = min_t(int, dev->mtu, lldev->mtu - (headroom + tailroom)); in chnl_net_open()
305 mtu = min_t(int, GPRS_PDP_MTU, mtu); in chnl_net_open()
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| /Linux-v5.4/net/sched/ |
| D | sch_teql.c | 191 dev->mtu < m->dev->mtu) in teql_qdisc_init()
200 if (dev->mtu < m->dev->mtu) in teql_qdisc_init()
201 m->dev->mtu = dev->mtu; in teql_qdisc_init()
208 m->dev->mtu = dev->mtu; in teql_qdisc_init()
357 int mtu = 0xFFFE; in teql_master_open() local
372 if (slave->mtu < mtu) in teql_master_open()
373 mtu = slave->mtu; in teql_master_open()
389 m->dev->mtu = mtu; in teql_master_open()
420 if (new_mtu > qdisc_dev(q)->mtu) in teql_master_mtu()
425 dev->mtu = new_mtu; in teql_master_mtu()
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| D | sch_tbf.c | 59 one with rate P (peak rate) and depth M (equal to link MTU)
87 Note that the peak rate TBF is much more tough: with MTU 1500
100 s64 buffer; /* Token bucket depth/rate: MUST BE >= MTU/B */
101 s64 mtu; member
227 if (ptoks > q->mtu) in tbf_dequeue()
228 ptoks = q->mtu; in tbf_dequeue()
278 q->ptokens = q->mtu; in tbf_reset()
303 s64 buffer, mtu; in tbf_change() local
327 mtu = min_t(u64, PSCHED_TICKS2NS(qopt->mtu), ~0U); in tbf_change()
354 mtu = psched_l2t_ns(&peak, pburst); in tbf_change()
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| /Linux-v5.4/net/ipv4/ |
| D | xfrm4_output.c | 19 int mtu, ret = 0; in xfrm4_tunnel_check_size() local
27 mtu = dst_mtu(skb_dst(skb)); in xfrm4_tunnel_check_size()
28 if ((!skb_is_gso(skb) && skb->len > mtu) || in xfrm4_tunnel_check_size()
34 xfrm_local_error(skb, mtu); in xfrm4_tunnel_check_size()
37 ICMP_FRAG_NEEDED, htonl(mtu)); in xfrm4_tunnel_check_size()
100 void xfrm4_local_error(struct sk_buff *skb, u32 mtu) in xfrm4_local_error() argument
106 inet_sk(skb->sk)->inet_dport, mtu); in xfrm4_local_error()
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| D | ip_forward.c | 43 static bool ip_exceeds_mtu(const struct sk_buff *skb, unsigned int mtu) in ip_exceeds_mtu() argument
45 if (skb->len <= mtu) in ip_exceeds_mtu()
51 /* original fragment exceeds mtu and DF is set */ in ip_exceeds_mtu()
52 if (unlikely(IPCB(skb)->frag_max_size > mtu)) in ip_exceeds_mtu()
58 if (skb_is_gso(skb) && skb_gso_validate_network_len(skb, mtu)) in ip_exceeds_mtu()
88 u32 mtu; in ip_forward() local
130 mtu = ip_dst_mtu_maybe_forward(&rt->dst, true); in ip_forward()
131 if (ip_exceeds_mtu(skb, mtu)) { in ip_forward()
134 htonl(mtu)); in ip_forward()
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| D | ip_output.c | 87 unsigned int mtu,
241 struct sk_buff *skb, unsigned int mtu) in ip_finish_output_gso() argument
247 /* common case: seglen is <= mtu in ip_finish_output_gso()
249 if (skb_gso_validate_network_len(skb, mtu)) in ip_finish_output_gso()
252 /* Slowpath - GSO segment length exceeds the egress MTU. in ip_finish_output_gso()
260 * interface with a smaller MTU. in ip_finish_output_gso()
263 * insufficent MTU. in ip_finish_output_gso()
280 err = ip_fragment(net, sk, segs, mtu, ip_finish_output2); in ip_finish_output_gso()
292 unsigned int mtu; in __ip_finish_output() local
301 mtu = ip_skb_dst_mtu(sk, skb); in __ip_finish_output()
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