| /kernel/linux/linux-6.6/Documentation/networking/ |
| D | checksum-offloads.rst | 4 Checksum Offloads
12 take advantage of checksum offload capabilities of various NICs.
16 * TX Checksum Offload
17 * LCO: Local Checksum Offload
18 * RCO: Remote Checksum Offload
22 * RX Checksum Offload
26 TX Checksum Offload
29 The interface for offloading a transmit checksum to a device is explained in
33 checksum defined by the sk_buff fields skb->csum_start and skb->csum_offset.
34 The device should compute the 16-bit ones-complement checksum (i.e. the
[all …]
|
| D | ila.rst | 112 Transport checksum handling
115 When an address is translated by ILA, an encapsulated transport checksum
118 including checksum offload in NICs, that process the checksum. There are
121 - no action Allow the checksum to be incorrect on the wire. Before
122 a receiver verifies a checksum the ILA to SIR address
125 - adjust transport checksum
127 and if a transport layer checksum is found then it is
128 adjusted to reflect the correct checksum per the
131 - checksum neutral mapping
134 the checksum. The low order sixteen bits of the identifier
[all …]
|
| D | udplite.rst | 9 is a variable-length checksum. This has advantages for transport of multimedia
11 fed into the codec instead of being discarded due to a failed checksum test.
37 IPPROTO need to be changed; senders additionally set the checksum coverage
58 using partial checksum coverage and so emulate UDP mode (full coverage).
60 To make use of the partial checksum coverage facilities requires setting a
63 * Sender checksum coverage: UDPLITE_SEND_CSCOV
70 sets the checksum coverage length to 20 bytes (12b data + 8b header).
76 * Receiver checksum coverage: UDPLITE_RECV_CSCOV
79 required to enable traffic with partial checksum coverage. Its function is
92 A detailed discussion of UDP-Lite checksum coverage options is in section IV.
[all …]
|
| /kernel/linux/linux-5.10/Documentation/networking/ |
| D | checksum-offloads.rst | 4 Checksum Offloads
12 take advantage of checksum offload capabilities of various NICs.
16 * TX Checksum Offload
17 * LCO: Local Checksum Offload
18 * RCO: Remote Checksum Offload
22 * RX Checksum Offload
26 TX Checksum Offload
29 The interface for offloading a transmit checksum to a device is explained in
33 checksum defined by the sk_buff fields skb->csum_start and skb->csum_offset.
34 The device should compute the 16-bit ones-complement checksum (i.e. the
[all …]
|
| D | ila.rst | 112 Transport checksum handling
115 When an address is translated by ILA, an encapsulated transport checksum
118 including checksum offload in NICs, that process the checksum. There are
121 - no action Allow the checksum to be incorrect on the wire. Before
122 a receiver verifies a checksum the ILA to SIR address
125 - adjust transport checksum
127 and if a transport layer checksum is found then it is
128 adjusted to reflect the correct checksum per the
131 - checksum neutral mapping
134 the checksum. The low order sixteen bits of the identifier
[all …]
|
| D | udplite.rst | 9 is a variable-length checksum. This has advantages for transport of multimedia
11 fed into the codec instead of being discarded due to a failed checksum test.
37 IPPROTO need to be changed; senders additionally set the checksum coverage
58 using partial checksum coverage and so emulate UDP mode (full coverage).
60 To make use of the partial checksum coverage facilities requires setting a
63 * Sender checksum coverage: UDPLITE_SEND_CSCOV
70 sets the checksum coverage length to 20 bytes (12b data + 8b header).
76 * Receiver checksum coverage: UDPLITE_RECV_CSCOV
79 required to enable traffic with partial checksum coverage. Its function is
92 A detailed discussion of UDP-Lite checksum coverage options is in section IV.
[all …]
|
| /kernel/linux/linux-6.6/drivers/acpi/acpica/ |
| D | utcksum.c | 29 * exception on bad checksum.
37 u8 checksum; in acpi_ut_verify_checksum() local
41 * They are the odd tables, have no standard ACPI header and no checksum in acpi_ut_verify_checksum()
48 /* Compute the checksum on the table */ in acpi_ut_verify_checksum()
51 checksum = in acpi_ut_verify_checksum()
53 table->checksum); in acpi_ut_verify_checksum()
55 /* Computed checksum matches table? */ in acpi_ut_verify_checksum()
57 if (checksum != table->checksum) { in acpi_ut_verify_checksum()
59 "Incorrect checksum in table [%4.4s] - 0x%2.2X, " in acpi_ut_verify_checksum()
61 table->signature, table->checksum, in acpi_ut_verify_checksum()
[all …]
|
| /kernel/linux/linux-6.6/arch/alpha/lib/ |
| D | csum_partial_copy.c | 16 #include <net/checksum.h>
87 unsigned long checksum = ~0U; in csum_partial_cfu_aligned() local
94 checksum += carry; in csum_partial_cfu_aligned()
96 checksum += word; in csum_partial_cfu_aligned()
98 carry = checksum < word; in csum_partial_cfu_aligned()
103 checksum += carry; in csum_partial_cfu_aligned()
110 checksum += word; in csum_partial_cfu_aligned()
112 carry = checksum < word; in csum_partial_cfu_aligned()
114 checksum += carry; in csum_partial_cfu_aligned()
116 return checksum; in csum_partial_cfu_aligned()
[all …]
|
| /kernel/linux/linux-5.10/arch/alpha/lib/ |
| D | csum_partial_copy.c | 86 unsigned long checksum = ~0U; in csum_partial_cfu_aligned() local
93 checksum += carry; in csum_partial_cfu_aligned()
95 checksum += word; in csum_partial_cfu_aligned()
97 carry = checksum < word; in csum_partial_cfu_aligned()
102 checksum += carry; in csum_partial_cfu_aligned()
109 checksum += word; in csum_partial_cfu_aligned()
111 carry = checksum < word; in csum_partial_cfu_aligned()
113 checksum += carry; in csum_partial_cfu_aligned()
115 return checksum; in csum_partial_cfu_aligned()
131 unsigned long checksum = ~0U; in csum_partial_cfu_dest_aligned() local
[all …]
|
| /kernel/linux/linux-6.6/net/ncsi/ |
| D | ncsi-pkt.h | 39 __be32 checksum; /* Checksum */ member
45 __be32 checksum; /* Checksum */ member
54 __be32 checksum; /* Checksum */ member
63 __be32 checksum; /* Checksum */ member
71 __be32 checksum; /* Checksum */ member
81 __be32 checksum; /* Checksum */ member
90 __be32 checksum; /* Checksum */ member
102 __be32 checksum; /* Checksum */ member
111 __be32 checksum; /* Checksum */ member
121 __be32 checksum; /* Checksum */ member
[all …]
|
| /kernel/linux/linux-5.10/net/ncsi/ |
| D | ncsi-pkt.h | 39 __be32 checksum; /* Checksum */ member
45 __be32 checksum; /* Checksum */ member
54 __be32 checksum; /* Checksum */ member
63 __be32 checksum; /* Checksum */ member
71 __be32 checksum; /* Checksum */ member
81 __be32 checksum; /* Checksum */ member
90 __be32 checksum; /* Checksum */ member
102 __be32 checksum; /* Checksum */ member
111 __be32 checksum; /* Checksum */ member
121 __be32 checksum; /* Checksum */ member
[all …]
|
| /kernel/linux/linux-6.6/Documentation/networking/device_drivers/cellular/qualcomm/ |
| D | rmnet.rst | 66 Function Raw bytes Checksum offload header
82 Checksum offload header, has the information about the checksum processing done
83 by the hardware.Checksum offload header fields are in big endian format.
88 Function Reserved Valid Checksum start offset
91 Function Checksum length Checksum value
95 Valid bit indicates whether the partial checksum is calculated and is valid.
101 Checksum start offset, Indicates the offset in bytes from the beginning of the
102 IP header, from which modem computed checksum.
104 Checksum length is the Length in bytes starting from CKSUM_START_OFFSET,
105 over which checksum is computed.
[all …]
|
| /kernel/linux/linux-5.10/Documentation/filesystems/ext4/ |
| D | checksums.rst | 8 The desired checksum algorithm is indicated in the superblock, though as
10 structures did not have space to fit a full 32-bit checksum, so only the
20 checksum, it will request that you run ``e2fsck -D`` to have the
24 protected by a checksum!
27 of checksum. The checksum function is whatever the superblock describes
39 - The entire superblock up to the checksum field. The UUID lives inside
43 - UUID + the entire MMP block up to the checksum field.
46 - UUID + the entire extended attribute block. The checksum field is set to
51 fake entry enclosing the checksum field.
55 The checksum field is set to zero.
[all …]
|
| /kernel/linux/linux-6.6/Documentation/filesystems/ext4/ |
| D | checksums.rst | 8 The desired checksum algorithm is indicated in the superblock, though as
10 structures did not have space to fit a full 32-bit checksum, so only the
20 checksum, it will request that you run ``e2fsck -D`` to have the
24 protected by a checksum!
27 of checksum. The checksum function is whatever the superblock describes
39 - The entire superblock up to the checksum field. The UUID lives inside
43 - UUID + the entire MMP block up to the checksum field.
46 - UUID + the entire extended attribute block. The checksum field is set to
51 fake entry enclosing the checksum field.
55 The checksum field is set to zero.
[all …]
|
| /kernel/linux/linux-6.6/arch/x86/include/asm/ |
| D | checksum_64.h | 8 * with some code from asm-x86/checksum.h
15 * csum_fold - Fold and invert a 32bit checksum.
18 * Fold a 32bit running checksum to 16bit and invert it. This is usually
19 * the last step before putting a checksum into a packet.
34 * which always checksum on 4 octet boundaries.
41 * ip_fast_csum - Compute the IPv4 header checksum efficiently.
76 * csum_tcpup_nofold - Compute an IPv4 pseudo header checksum.
83 * Returns the pseudo header checksum the input data. Result is
102 * csum_tcpup_magic - Compute an IPv4 pseudo header checksum.
109 * Returns the 16bit pseudo header checksum the input data already
[all …]
|
| /kernel/linux/linux-5.10/arch/x86/include/asm/ |
| D | checksum_64.h | 8 * with some code from asm-x86/checksum.h
16 * csum_fold - Fold and invert a 32bit checksum.
19 * Fold a 32bit running checksum to 16bit and invert it. This is usually
20 * the last step before putting a checksum into a packet.
35 * which always checksum on 4 octet boundaries.
42 * ip_fast_csum - Compute the IPv4 header checksum efficiently.
77 * csum_tcpup_nofold - Compute an IPv4 pseudo header checksum.
84 * Returns the pseudo header checksum the input data. Result is
103 * csum_tcpup_magic - Compute an IPv4 pseudo header checksum.
110 * Returns the 16bit pseudo header checksum the input data already
[all …]
|
| /kernel/linux/linux-5.10/drivers/net/ethernet/intel/igc/ |
| D | igc_nvm.c | 155 * igc_validate_nvm_checksum - Validate EEPROM checksum
158 * Calculates the EEPROM checksum by reading/adding each word of the EEPROM
163 u16 checksum = 0; in igc_validate_nvm_checksum() local
173 checksum += nvm_data; in igc_validate_nvm_checksum()
176 if (checksum != (u16)NVM_SUM) { in igc_validate_nvm_checksum()
177 hw_dbg("NVM Checksum Invalid\n"); in igc_validate_nvm_checksum()
187 * igc_update_nvm_checksum - Update EEPROM checksum
190 * Updates the EEPROM checksum by reading/adding each word of the EEPROM
191 * up to the checksum. Then calculates the EEPROM checksum and writes the
196 u16 checksum = 0; in igc_update_nvm_checksum() local
[all …]
|
| /kernel/linux/linux-6.6/drivers/net/ethernet/intel/igc/ |
| D | igc_nvm.c | 155 * igc_validate_nvm_checksum - Validate EEPROM checksum
158 * Calculates the EEPROM checksum by reading/adding each word of the EEPROM
163 u16 checksum = 0; in igc_validate_nvm_checksum() local
173 checksum += nvm_data; in igc_validate_nvm_checksum()
176 if (checksum != (u16)NVM_SUM) { in igc_validate_nvm_checksum()
177 hw_dbg("NVM Checksum Invalid\n"); in igc_validate_nvm_checksum()
187 * igc_update_nvm_checksum - Update EEPROM checksum
190 * Updates the EEPROM checksum by reading/adding each word of the EEPROM
191 * up to the checksum. Then calculates the EEPROM checksum and writes the
196 u16 checksum = 0; in igc_update_nvm_checksum() local
[all …]
|
| /kernel/linux/linux-6.6/drivers/gpu/drm/vboxvideo/ |
| D | vbox_hgsmi.c | 32 /* Not really a checksum but that is the naming used in all vbox code */
37 u32 checksum; in hgsmi_checksum() local
39 checksum = hgsmi_hash_process(0, (u8 *)&offset, sizeof(offset)); in hgsmi_checksum()
40 checksum = hgsmi_hash_process(checksum, (u8 *)header, sizeof(*header)); in hgsmi_checksum()
41 /* 4 -> Do not checksum the checksum itself */ in hgsmi_checksum()
42 checksum = hgsmi_hash_process(checksum, (u8 *)tail, 4); in hgsmi_checksum()
44 return hgsmi_hash_end(checksum); in hgsmi_checksum()
69 t->checksum = hgsmi_checksum(offset, h, t); in hgsmi_buffer_alloc()
|
| /kernel/linux/linux-5.10/drivers/gpu/drm/vboxvideo/ |
| D | vbox_hgsmi.c | 32 /* Not really a checksum but that is the naming used in all vbox code */
37 u32 checksum; in hgsmi_checksum() local
39 checksum = hgsmi_hash_process(0, (u8 *)&offset, sizeof(offset)); in hgsmi_checksum()
40 checksum = hgsmi_hash_process(checksum, (u8 *)header, sizeof(*header)); in hgsmi_checksum()
41 /* 4 -> Do not checksum the checksum itself */ in hgsmi_checksum()
42 checksum = hgsmi_hash_process(checksum, (u8 *)tail, 4); in hgsmi_checksum()
44 return hgsmi_hash_end(checksum); in hgsmi_checksum()
69 t->checksum = hgsmi_checksum(offset, h, t); in hgsmi_buffer_alloc()
|
| /kernel/linux/linux-6.6/drivers/platform/chrome/wilco_ec/ |
| D | mailbox.c | 68 * wilco_ec_checksum() - Compute 8-bit checksum over data range.
69 * @data: Data to checksum.
70 * @size: Number of bytes to checksum.
72 * Return: 8-bit checksum of provided data.
77 u8 checksum = 0; in wilco_ec_checksum() local
81 checksum += data_bytes[i]; in wilco_ec_checksum()
83 return checksum; in wilco_ec_checksum()
100 /* Checksum header and data */ in wilco_ec_prepare()
101 rq->checksum = wilco_ec_checksum(rq, sizeof(*rq)); in wilco_ec_prepare()
102 rq->checksum += wilco_ec_checksum(msg->request_data, msg->request_size); in wilco_ec_prepare()
[all …]
|
| /kernel/linux/linux-5.10/drivers/platform/chrome/wilco_ec/ |
| D | mailbox.c | 68 * wilco_ec_checksum() - Compute 8-bit checksum over data range.
69 * @data: Data to checksum.
70 * @size: Number of bytes to checksum.
72 * Return: 8-bit checksum of provided data.
77 u8 checksum = 0; in wilco_ec_checksum() local
81 checksum += data_bytes[i]; in wilco_ec_checksum()
83 return checksum; in wilco_ec_checksum()
100 /* Checksum header and data */ in wilco_ec_prepare()
101 rq->checksum = wilco_ec_checksum(rq, sizeof(*rq)); in wilco_ec_prepare()
102 rq->checksum += wilco_ec_checksum(msg->request_data, msg->request_size); in wilco_ec_prepare()
[all …]
|
| /kernel/linux/linux-6.6/drivers/net/ethernet/wangxun/txgbe/ |
| D | txgbe_hw.c | 182 * txgbe_calc_eeprom_checksum - Calculates and returns the checksum
184 * @checksum: pointer to cheksum
188 static int txgbe_calc_eeprom_checksum(struct wx *wx, u16 *checksum) in txgbe_calc_eeprom_checksum() argument
212 *checksum += local_buffer[i]; in txgbe_calc_eeprom_checksum()
217 *checksum = TXGBE_EEPROM_SUM - *checksum; in txgbe_calc_eeprom_checksum()
223 * txgbe_validate_eeprom_checksum - Validate EEPROM checksum
225 * @checksum_val: calculated checksum
227 * Performs checksum calculation and validates the EEPROM checksum. If the
233 u16 checksum; in txgbe_validate_eeprom_checksum() local
240 status = wx_read_ee_hostif(wx, 0, &checksum); in txgbe_validate_eeprom_checksum()
[all …]
|
| /kernel/linux/linux-6.6/drivers/net/ethernet/qualcomm/rmnet/ |
| D | rmnet_map_data.c | 42 /* Computing the checksum over just the IPv4 header--including its in rmnet_map_ipv4_dl_csum_trailer()
43 * checksum field--should yield 0. If it doesn't, the IP header in rmnet_map_ipv4_dl_csum_trailer()
51 /* We don't support checksum offload on IPv4 fragments */ in rmnet_map_ipv4_dl_csum_trailer()
57 /* Checksum offload is only supported for UDP and TCP protocols */ in rmnet_map_ipv4_dl_csum_trailer()
64 /* RFC 768: UDP checksum is optional for IPv4, and is 0 if unused */ in rmnet_map_ipv4_dl_csum_trailer()
70 /* The checksum value in the trailer is computed over the entire in rmnet_map_ipv4_dl_csum_trailer()
72 * transport checksum from this, we first subract the contribution in rmnet_map_ipv4_dl_csum_trailer()
73 * of the IP header from the trailer checksum. We then add the in rmnet_map_ipv4_dl_csum_trailer()
74 * checksum computed over the pseudo header. in rmnet_map_ipv4_dl_csum_trailer()
77 * trailer checksum. Therefore the checksum in the trailer is in rmnet_map_ipv4_dl_csum_trailer()
[all …]
|
| /kernel/linux/linux-5.10/arch/x86/um/asm/ |
| D | checksum.h | 10 * computes the checksum of a memory block at buff, length len,
24 * csum_fold - Fold and invert a 32bit checksum.
27 * Fold a 32bit running checksum to 16bit and invert it. This is usually
28 * the last step before putting a checksum into a packet.
44 * csum_tcpup_nofold - Compute an IPv4 pseudo header checksum.
51 * Returns the pseudo header checksum the input data. Result is
68 * computes the checksum of the TCP/UDP pseudo-header
69 * returns a 16-bit checksum, already complemented
79 * ip_fast_csum - Compute the IPv4 header checksum efficiently.
|